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Chivalrous Diǎnlán

#1a57ac
Notes

Chivalrous Diǎnlán (#1A57AC) is a true azure 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 (215°, 74%, 39%) 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
#1a57ac
RGB
rgb(26, 87, 172)
HSL
hsl(215, 74%, 39%)
HWB
hwb(215 10% 33%)
OKLCH
oklch(46.9% 0.149 258.0)
HSV
hsv(215, 85%, 67%)
LAB
lab(37.87% 13.52 -50.80)
LCH
lch(37.87% 52.56 284.90)
CMYK
cmyk(85%, 49%, 0%, 33%)

Etymology

Chivalrous
adjective

Old French chevaleros, knightly — adjectival suffix -ous, derived from cheval (horse). As a color modifier, chivalrous implies a saturated-and-knightly-and-gallant quality, the deep-rich color of medieval-Romance chanson-de-geste hero-and-troubadour song tradition. Sits at the bold-and-chivalrous end of the grid, parallel to gallant and knightly.

Diǎnlán
noun

Chinese diǎnlán (深蓝) — deep blue, used for the saturated blue of Ming-dynasty cobalt-on-porcelain underglaze and the deep-blue silks of Han-period imperial robes. The color refers to a Ming-dynasty diǎnlán cobalt-on-porcelain plate: a saturated, slightly cool deep blue with the high gloss of fired porcelain glaze.

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.

#1a57ac
Original
#2460af
Protanopia
#0053aa
Deuteranopia
#006c79
Tritanopia
#505050
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
6.99:1
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
3.00:1

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