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Authoritative Eros Indigo

#5971e2
Notes

Authoritative Eros Indigo (#5971E2) is a true blue with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (229°, 70%, 62%) 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
#5971e2
RGB
rgb(89, 113, 226)
HSL
hsl(229, 70%, 62%)
HWB
hwb(229 35% 11%)
OKLCH
oklch(58.9% 0.173 271.2)
HSV
hsv(229, 61%, 89%)
LAB
lab(51.18% 25.36 -60.36)
LCH
lch(51.18% 65.47 292.79)
CMYK
cmyk(61%, 50%, 0%, 11%)

Etymology

Authoritative
adjective

Latin auctōritāt-, authority — adjectival suffix -ive. As a color modifier, authoritative implies a saturated-and-formal-imperative quality where the hue carries decisional weight and institutional credibility. Sits at the bold-and-authoritative end of the grid, parallel to commanding and magisterial in usage.

Eros
modifier

Greek Ἔρως, god-of-love-and-desire. As a color modifier, eros implies a winged-love-and-arrow-of-desire quality, the visual register of Praxiteles-Eros-and-Roman-Cupid hand-winged-love-and-arrow-of-desire Praxiteles-Eros-and-Roman-Cupid-and-Pompeii-fresco eros-and-winged-love-and-arrow-of-desire surfaces under Praxiteles-Eros-and-Roman-Cupid-and-Pompeii-fresco Hellenistic-and-Roman-Pompeii rose-and-myrtle-light. Sits at the modifier-and-myth end of the grid, parallel to zeus and hera in usage.

Indigo
noun

Indigofera tinctoria, the South Asian legume whose leaves yield the deep blue dye that has clothed humanity for at least four thousand years — Egyptian linen, Mayan textile, the slave-grown plantations of Carolina. The color refers to a freshly indigo-dyed cotton thread: a saturated, slightly violet-shifted deep blue with the slight lustre of a fiber surface oxidized in air. Deeper than cobalt, cooler than royal.

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.

#5971e2
Original
#3380e6
Protanopia
#1174e0
Deuteranopia
#008b9f
Tritanopia
#747474
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).
AA Largeon White
4.30:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
4.89:1

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