#640310
Closest named color: Claret (#680018). oklch(32% 0.126 23.1), rgb(100, 3, 16).
Aa
White text reads best on this color (13.44:1).
About this color
#640310 is a dark, moderately saturated red. In OKLCH its lightness is 32%, its chroma 0.126 and its hue 23°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.014 away. White text reads best on it, at 13.44:1.
| Hue family | Reds |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.126) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.56:1 |
| White text | 13.44:1 |
Values
| HEX | #640310 |
| RGB | rgb(100, 3, 16) |
| HSL | hsl(352, 94%, 20%) |
| OKLCH | oklch(32% 0.126 23.1) |
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 #640310 | 13.44:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #640310 | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #640310 text on white | 13.44:1 | AAA | Lc 98.2 | Preferred for body text |
| #640310 text on black | 1.56:1 | 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 950.
-
Step 50
50
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FFE2E0
oklch(93.6% 0.032 22.5)
-
Step 200
200
#FFCAC6
oklch(88.4% 0.061 23.4)
-
Step 300
300
#FFA5A0
oklch(81% 0.108 23.2)
-
Step 400
400
#FF6868
oklch(70.7% 0.185 23)
-
Step 500
500
#FF0035
oklch(63.1% 0.255 23.2)
-
Step 600
600
#D8002C
oklch(55.7% 0.225 23.1)
-
Step 700
700
#B70023
oklch(49.2% 0.199 23.2)
-
Step 800
800
#97001B
oklch(42.7% 0.172 23.3)
-
Step 900
900
#7F0015
oklch(37.6% 0.152 23.3)
-
Step 950
950 (this color)
#640310
oklch(32% 0.126 23.1)
#640310 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) | #26220F | 0.140 |
| Deuteranopia (no green cones) | #3D360C | 0.127 |
| Tritanopia (no blue cones) | #6F0009 | 0.026 |
| Achromatopsia (no color) | #2F2F2F | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #640310
#640310
oklch(32% 0.126 23.1)
- #003B3F
#003B3F
oklch(32.1% 0.055 202.3)
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 #640310, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.014
- Burgundy #610023 ΔE 0.030
- Reddy Brown #6E1005 ΔE 0.034
- Blood #770001 ΔE 0.045
- Wine Red #7B0323 ΔE 0.058
- Bordeaux #7B002C ΔE 0.064
- Maroon #800000 ΔE 0.065
- Mahogany #4A0100 ΔE 0.067
Use #640310 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.