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Bold Liatris

#644da2
Notes

Bold Liatris (#644DA2) is a true indigo with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (256°, 36%, 47%) 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 lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#644da2
RGB
rgb(100, 77, 162)
HSL
hsl(256, 36%, 47%)
HWB
hwb(256 30% 36%)
OKLCH
oklch(48.6% 0.132 293.3)
HSV
hsv(256, 52%, 64%)
LAB
lab(38.94% 29.91 -42.88)
LCH
lch(38.94% 52.28 304.90)
CMYK
cmyk(38%, 52%, 0%, 36%)

Etymology

Bold
adjective

Old English beald, brave, courageous — a quality word that crossed over to color in the late seventeenth century. Bold describes a color that asserts itself: high saturation combined with mid lightness, where the hue presents itself without compromise. Sits at the center of the bold-bucket grid, near strong and rich. Closer to a presence word than a pigment word.

Liatris
noun

North American prairie blazing star (Liatris spicata) — its dense vertical spike of disk-flowers blooms top-down in late summer across midwestern tallgrass prairie. Liatris color refers to a fully bloomed Liatris spicata spike on a Wisconsin prairie remnant: a saturated, slightly cool deep blue-violet with the velvet finish of fresh disk-flowers. Slightly warmer than Verbena and cooler than Lythrum salicaria.

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.

#644da2
Original
#2a5da5
Protanopia
#2f5aa0
Deuteranopia
#545e70
Tritanopia
#585858
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
6.72:1
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
3.13:1

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