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Firm Hokkaido

#433199
Notes

Firm Hokkaido (#433199) 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 (250°, 51%, 40%) 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#433199
RGB
rgb(67, 49, 153)
HSL
hsl(250, 51%, 40%)
HWB
hwb(250 19% 40%)
OKLCH
oklch(40.0% 0.161 284.4)
HSV
hsv(250, 68%, 60%)
LAB
lab(28.61% 36.94 -54.29)
LCH
lch(28.61% 65.67 304.23)
CMYK
cmyk(56%, 68%, 0%, 40%)

Etymology

Firm
adjective

Latin firmus, strong / stable — sharing root with English farm (originally a fixed-yearly-rental). As a color modifier, firm implies a saturated-and-resolute quality where the hue holds its visual position without wavering. Sits at the bold-and-firm end of the grid, parallel to steadfast and unwavering in usage.

Hokkaido
noun

Japan's northernmost island, home to the Furano lavender fields cultivated since 1948 by Tomita Farm — a Japanese imitation of Provençal lavender agriculture, now a national tourist landmark. Hokkaido color refers to a Furano lavender field at peak bloom: a saturated, slightly cool deep blue-violet with the matte finish of Lavandula angustifolia essential-oil-rich bracts. Slightly cooler than Provençal lavanda.

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.

#433199
Original
#00479c
Protanopia
#004097
Deuteranopia
#1b4b61
Tritanopia
#3c3c3c
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
9.82:1
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
2.14:1

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