#640D07
Closest named color: Reddy Brown (#6E1005). oklch(32.5% 0.12 29.5), rgb(100, 13, 7).
Aa
White text reads best on this color (13.10:1).
About this color
#640D07 is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.120 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Reddy Brown (#6E1005), ΔE 0.025 away. White text reads best on it, at 13.10:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.120) |
| Temperature | warm |
| Nearest name | Reddy Brown (#6E1005) |
| Black text | 1.60:1 |
| White text | 13.10:1 |
Values
| HEX | #640D07 |
| RGB | rgb(100, 13, 7) |
| HSL | hsl(4, 87%, 21%) |
| OKLCH | oklch(32.5% 0.12 29.5) |
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 #640D07 | 13.10:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #640D07 | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #640D07 text on white | 13.10:1 | AAA | Lc 98.0 | Preferred for body text |
| #640D07 text on black | 1.60:1 | 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
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FBE4E0
oklch(93.6% 0.026 29.4)
-
Step 200
200
#F9CDC6
oklch(88.4% 0.051 28.7)
-
Step 300
300
#F5AB9F
oklch(80.9% 0.09 29.4)
-
Step 400
400
#ED7A6A
oklch(70.7% 0.145 29.4)
-
Step 500
500
#E35141
oklch(63% 0.184 29.4)
-
Step 600
600
#CF2B1E
oklch(55.6% 0.201 29.6)
-
Step 700
700
#B21A10
oklch(49% 0.186 29.5)
-
Step 800
800
#911B12
oklch(42.7% 0.155 29.5)
-
Step 900
900 (this color)
#640D07
oklch(32.5% 0.12 29.5)
-
Step 950
950
#45140E
oklch(27.1% 0.077 29.9)
#640D07 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) | #2A2405 | 0.130 |
| Deuteranopia (no green cones) | #3F3702 | 0.117 |
| Tritanopia (no blue cones) | #6F000D | 0.026 |
| Achromatopsia (no color) | #303030 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #640D07
#640D07
oklch(32.5% 0.12 29.5)
- #003C44
#003C44
oklch(32.6% 0.056 209.4)
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 #640D07, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Reddy Brown #6E1005 ΔE 0.025
- Claret #680018 ΔE 0.026
- Blood #770001 ΔE 0.041
- Burgundy #610023 ΔE 0.044
- Wine Red #7B0323 ΔE 0.061
- Maroon #800000 ΔE 0.062
- Chestnut #742802 ΔE 0.066
- Bordeaux #7B002C ΔE 0.069
Use #640D07 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.