#634743
Closest named color: Purple Brown (#673A3F). oklch(42.7% 0.039 28), rgb(99, 71, 67).
Aa
White text reads best on this color (8.35:1).
About this color
#634743 is a dark, muted red. In OKLCH its lightness is 43%, its chroma 0.039 and its hue 28°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.035 away. White text reads best on it, at 8.35:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | muted (0.039) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.51:1 |
| White text | 8.35:1 |
Values
| HEX | #634743 |
| RGB | rgb(99, 71, 67) |
| HSL | hsl(8, 19%, 33%) |
| OKLCH | oklch(42.7% 0.039 28) |
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 #634743 | 8.35:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #634743 | 2.51:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #634743 text on white | 8.35:1 | AAA | Lc 88.8 | Fine for body text |
| #634743 text on black | 2.51:1 | Fails | Lc -13.4 | 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 800.
-
Step 50
50
#F7F5F4
oklch(97.1% 0.003 48.7)
-
Step 100
100
#EEE8E7
oklch(93.5% 0.007 28.8)
-
Step 200
200
#E1D6D4
oklch(88.4% 0.012 29.9)
-
Step 300
300
#CFBBB8
oklch(80.8% 0.023 27.8)
-
Step 400
400
#B79894
oklch(70.7% 0.038 26.7)
-
Step 500
500
#A47F7A
oklch(63.1% 0.047 27.3)
-
Step 600
600
#8F6863
oklch(55.6% 0.051 27.1)
-
Step 700
700
#7A5752
oklch(49.2% 0.048 28.1)
-
Step 800
800 (this color)
#634743
oklch(42.7% 0.039 28)
-
Step 900
900
#513C38
oklch(37.8% 0.031 30.8)
-
Step 950
950
#2F2321
oklch(27% 0.019 29.3)
#634743 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) | #4D4A43 | 0.039 |
| Deuteranopia (no green cones) | #535043 | 0.037 |
| Tritanopia (no blue cones) | #694446 | 0.015 |
| Achromatopsia (no color) | #4E4E4E | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634743
#634743
oklch(42.7% 0.039 28)
- #34555A
#34555A
oklch(42.6% 0.039 207.9)
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 #634743, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.035
- Brownish Purple #76424E ΔE 0.044
- Mud Brown #60460F ΔE 0.064
- Charcoal Grey #3C4142 ΔE 0.073
- Milk Chocolate #7F4E1E ΔE 0.076
- Dark Slate Gray #2F4F4F ΔE 0.080
- Dusty Grape #545775 ΔE 0.081
- Dark Mauve #874C62 ΔE 0.085
Use #634743 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.