#640F18
Closest named color: Claret (#680018). oklch(32.9% 0.117 21.6), rgb(100, 15, 24).
Aa
White text reads best on this color (12.93:1).
About this color
#640F18 is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.117 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.016 away. White text reads best on it, at 12.93:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.117) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.62:1 |
| White text | 12.93:1 |
Values
| HEX | #640F18 |
| RGB | rgb(100, 15, 24) |
| HSL | hsl(354, 74%, 23%) |
| OKLCH | oklch(32.9% 0.117 21.6) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #640F18 | 12.93:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #640F18 | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #640F18 text on white | 12.93:1 | AAA | Lc 97.8 | Preferred for body text |
| #640F18 text on black | 1.62:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FBE4E2
oklch(93.7% 0.025 23.6)
-
Step 200
200
#F8CDCB
oklch(88.5% 0.049 21.2)
-
Step 300
300
#F4AAA8
oklch(80.8% 0.088 20.9)
-
Step 400
400
#EB7A79
oklch(70.7% 0.14 21.8)
-
Step 500
500
#E15157
oklch(63.1% 0.179 21.5)
-
Step 600
600
#CD2C3C
oklch(55.7% 0.196 21.7)
-
Step 700
700
#B01B2E
oklch(49% 0.181 21.6)
-
Step 800
800
#8F1B27
oklch(42.6% 0.15 21.5)
-
Step 900
900 (this color)
#640F18
oklch(32.9% 0.117 21.6)
-
Step 950
950
#441416
oklch(27% 0.074 21.1)
#640F18 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #292618 | 0.129 |
| Deuteranopia (no green cones) | #3E3815 | 0.118 |
| Tritanopia (no blue cones) | #6F0013 | 0.025 |
| Achromatopsia (no color) | #313131 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #640F18
#640F18
oklch(32.9% 0.117 21.6)
- #003D41
#003D41
oklch(32.8% 0.056 202.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #640F18, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.016
- Reddy Brown #6E1005 ΔE 0.030
- Burgundy #610023 ΔE 0.030
- Blood #770001 ΔE 0.044
- Wine Red #7B0323 ΔE 0.053
- Bordeaux #7B002C ΔE 0.059
- Maroon #800000 ΔE 0.063
- Merlot #730039 ΔE 0.063
Use #640F18 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.