#63312E
Closest named color: Purple Brown (#673A3F). oklch(37.8% 0.073 24.7), rgb(99, 49, 46).
Aa
White text reads best on this color (10.45:1).
About this color
#63312E is a dark, moderately saturated red. In OKLCH its lightness is 38%, its chroma 0.073 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.032 away. White text reads best on it, at 10.45:1.
| Hue family | Reds |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.073) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.00:1 |
| White text | 10.45:1 |
Values
| HEX | #63312E |
| RGB | rgb(99, 49, 46) |
| HSL | hsl(3, 37%, 28%) |
| OKLCH | oklch(37.8% 0.073 24.7) |
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 #63312E | 10.45:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #63312E | 2.00:1 | Fails | Lc 10.0 | Not readable |
| #63312E text on white | 10.45:1 | AAA | Lc 93.9 | Preferred for body text |
| #63312E text on black | 2.00:1 | Fails | Lc -8.6 | 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
#FAF4F3
oklch(97.2% 0.007 28.8)
-
Step 100
100
#F4E6E5
oklch(93.6% 0.015 22.4)
-
Step 200
200
#EDD2CF
oklch(88.5% 0.031 25.3)
-
Step 300
300
#E2B4AF
oklch(81% 0.054 25.5)
-
Step 400
400
#D28B85
oklch(70.7% 0.088 24.8)
-
Step 500
500
#C46D67
oklch(63.1% 0.111 24.9)
-
Step 600
600
#AF534F
oklch(55.6% 0.121 24.3)
-
Step 700
700
#96433F
oklch(49% 0.113 24.9)
-
Step 800
800
#7A3834
oklch(42.7% 0.093 25.3)
-
Step 900
900 (this color)
#63312E
oklch(37.8% 0.073 24.7)
-
Step 950
950
#3A1D1B
oklch(27% 0.046 24.7)
#63312E 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) | #3C392E | 0.077 |
| Deuteranopia (no green cones) | #49432D | 0.069 |
| Tritanopia (no blue cones) | #6C2A30 | 0.024 |
| Achromatopsia (no color) | #3F3F3F | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63312E
#63312E
oklch(37.8% 0.073 24.7)
- #004B52
#004B52
oklch(37.7% 0.064 205.5)
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 #63312E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.032
- Chestnut #742802 ΔE 0.051
- Reddy Brown #6E1005 ΔE 0.064
- Brownish Purple #76424E ΔE 0.072
- Wine Red #7B0323 ΔE 0.075
- Blood #770001 ΔE 0.077
- Claret #680018 ΔE 0.078
- Mud Brown #60460F ΔE 0.079
Use #63312E 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.