#623637
Closest named color: Purple Brown (#673A3F). oklch(38.8% 0.063 18.9), rgb(98, 54, 55).
Aa
White text reads best on this color (9.98:1).
About this color
#623637 is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.063 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.018 away. White text reads best on it, at 9.98:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.063) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.10:1 |
| White text | 9.98:1 |
Values
| HEX | #623637 |
| RGB | rgb(98, 54, 55) |
| HSL | hsl(359, 29%, 30%) |
| OKLCH | oklch(38.8% 0.063 18.9) |
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 #623637 | 9.98:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #623637 | 2.10:1 | Fails | Lc 11.0 | Not readable |
| #623637 text on white | 9.98:1 | AAA | Lc 93.0 | Preferred for body text |
| #623637 text on black | 2.10:1 | Fails | Lc -9.5 | 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
#FAF4F4
oklch(97.2% 0.006 17.3)
-
Step 100
100
#F3E6E6
oklch(93.5% 0.014 17.4)
-
Step 200
200
#EAD3D2
oklch(88.5% 0.026 20.6)
-
Step 300
300
#DEB5B5
oklch(80.9% 0.048 18.2)
-
Step 400
400
#CC8E8E
oklch(70.8% 0.076 19.1)
-
Step 500
500
#BD7172
oklch(63.2% 0.096 19.3)
-
Step 600
600
#A8585B
oklch(55.6% 0.105 18.7)
-
Step 700
700
#90484A
oklch(49.2% 0.097 19.5)
-
Step 800
800
#753B3D
oklch(42.7% 0.081 18.9)
-
Step 900
900 (this color)
#623637
oklch(38.8% 0.063 18.9)
-
Step 950
950
#381E1F
oklch(27% 0.041 17.6)
#623637 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) | #3F3D37 | 0.067 |
| Deuteranopia (no green cones) | #4A4636 | 0.063 |
| Tritanopia (no blue cones) | #6A3137 | 0.019 |
| Achromatopsia (no color) | #424242 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #623637
#623637
oklch(38.8% 0.063 18.9)
- #084F51
#084F51
oklch(38.9% 0.063 197.9)
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 #623637, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.018
- Brownish Purple #76424E ΔE 0.060
- Chestnut #742802 ΔE 0.062
- Charcoal Grey #3C4142 ΔE 0.072
- Mud Brown #60460F ΔE 0.078
- Reddy Brown #6E1005 ΔE 0.079
- Onyx #343A40 ΔE 0.084
- Wine Red #7B0323 ΔE 0.085
Use #623637 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.