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Wellbred Ceres Sapphire

#3645bd
Notes

Wellbred Ceres Sapphire (#3645BD) is a true blue with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (233°, 56%, 48%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#3645bd
RGB
rgb(54, 69, 189)
HSL
hsl(233, 56%, 48%)
HWB
hwb(233 21% 26%)
OKLCH
oklch(45.7% 0.187 271.3)
HSV
hsv(233, 71%, 74%)
LAB
lab(35.43% 34.83 -64.74)
LCH
lch(35.43% 73.52 298.28)
CMYK
cmyk(71%, 63%, 0%, 26%)

Etymology

Wellbred
adjective

Old English wel-brēd, well-bred — past-participle of breed, sharing root with brood (offspring). As a color modifier, wellbred implies a saturated-and-elegant-and-formal quality, the deep-rich color of Edwardian-period finishing-school-and-debutante-Court English-aristocratic livery. Sits at the bold-and-elegant end of the grid, parallel to highborn and patrician.

Ceres
modifier

Latin Ceres, Roman-goddess-of-grain. As a color modifier, ceres implies a dwarf-planet-and-asteroid-belt-and-grain-goddess quality, the visual register of Ceres-dwarf-planet-and-asteroid-belt hand-dwarf-planet-and-asteroid-belt-and-grain-goddess Ceres-dwarf-planet-and-asteroid-belt-and-Dawn-mission ceres-and-dwarf-planet-and-asteroid-belt surfaces under Ceres-dwarf-planet-and-asteroid-belt-and-Dawn-mission inner-asteroid-belt-and-Occator-crater dwarf-planet-light. Sits at the modifier-and-cosmic end of the grid, parallel to vesta and pallas in usage.

Sapphire
noun

An iron-and-titanium-bearing corundum — the same mineral as ruby, hardness 9 on the Mohs scale, mined for two millennia from Sri Lanka, Burma, Madagascar, and the Cashmere mines of British India. The color refers to a fine Kashmir-cut sapphire: a saturated, slightly violet-shifted deep blue with the gem's signature internal velvet — a quality of light scattering in the stone that faceted glass cannot replicate. Cooler than cobalt, deeper than azure.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

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Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#3645bd
Original
#005ac1
Protanopia
#004dbb
Deuteranopia
#00647a
Tritanopia
#4a4a4a
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon White
7.66:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.74:1

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