#634742
Closest named color: Purple Brown (#673A3F). oklch(42.7% 0.04 30.2), rgb(99, 71, 66).
Aa
White text reads best on this color (8.36:1).
About this color
#634742 is a dark, muted red. In OKLCH its lightness is 43%, its chroma 0.040 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.036 away. White text reads best on it, at 8.36:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | muted (0.040) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.51:1 |
| White text | 8.36:1 |
Values
| HEX | #634742 |
| RGB | rgb(99, 71, 66) |
| HSL | hsl(9, 20%, 32%) |
| OKLCH | oklch(42.7% 0.04 30.2) |
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 #634742 | 8.36:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #634742 | 2.51:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #634742 text on white | 8.36:1 | AAA | Lc 88.8 | Fine for body text |
| #634742 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
#B79993
oklch(70.8% 0.037 31.2)
-
Step 500
500
#A47F78
oklch(63% 0.047 30.7)
-
Step 600
600
#8F6861
oklch(55.5% 0.052 30.3)
-
Step 700
700
#7A5750
oklch(49.2% 0.048 31.6)
-
Step 800
800 (this color)
#634742
oklch(42.7% 0.04 30.2)
-
Step 900
900
#513C38
oklch(37.8% 0.031 30.8)
-
Step 950
950
#2F2321
oklch(27% 0.019 29.3)
#634742 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) | #4D4A42 | 0.039 |
| Deuteranopia (no green cones) | #545042 | 0.036 |
| Tritanopia (no blue cones) | #694346 | 0.018 |
| Achromatopsia (no color) | #4E4E4E | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634742
#634742
oklch(42.7% 0.04 30.2)
- #34555B
#34555B
oklch(42.7% 0.04 210.3)
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 #634742, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.036
- Brownish Purple #76424E ΔE 0.045
- Mud Brown #60460F ΔE 0.062
- Charcoal Grey #3C4142 ΔE 0.073
- Milk Chocolate #7F4E1E ΔE 0.075
- Dark Slate Gray #2F4F4F ΔE 0.080
- Dusty Grape #545775 ΔE 0.083
- Medium Brown #7F5112 ΔE 0.085
Use #634742 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.