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Decisive Juno Sapphire

#1d59c8
Notes

Decisive Juno Sapphire (#1D59C8) is a true azure with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (219°, 75%, 45%) 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
#1d59c8
RGB
rgb(29, 89, 200)
HSL
hsl(219, 75%, 45%)
HWB
hwb(219 11% 22%)
OKLCH
oklch(49.5% 0.184 261.4)
HSV
hsv(219, 86%, 78%)
LAB
lab(40.53% 23.50 -62.87)
LCH
lch(40.53% 67.12 290.49)
CMYK
cmyk(86%, 56%, 0%, 22%)

Etymology

Decisive
adjective

From the Latin decidere, to cut off — used as a modifier for colors that read as firm and final. Decisive black, decisive red: the implication is that the color has settled on its position and won't drift. Sits in the bold-bucket corner alongside resolute, with a slightly sharper edge.

Juno
modifier

Latin Juno, Roman-queen-of-gods. As a color modifier, juno implies an asteroid-and-queen-of-gods quality, the visual register of Juno-asteroid-and-Roman-queen hand-asteroid-and-queen-of-gods Juno-asteroid-and-Roman-queen-and-Jupiter-mission juno-and-asteroid-and-queen-of-gods surfaces under Juno-asteroid-and-Roman-queen-and-Jupiter-mission asteroid-belt-and-Roman-temple ancient-pantheon-light. Sits at the modifier-and-cosmic end of the grid, parallel to ceres and vesta 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

Click any swatch to explore

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.

#1d59c8
Original
#0068cc
Protanopia
#0058c6
Deuteranopia
#007588
Tritanopia
#545454
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).
AAon White
6.33:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.32:1

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