#613633
Closest named color: Purple Brown (#673A3F). oklch(38.6% 0.062 24.6), rgb(97, 54, 51).
Aa
White text reads best on this color (10.07:1).
About this color
#613633 is a dark, muted red. In OKLCH its lightness is 39%, its chroma 0.062 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.023 away. White text reads best on it, at 10.07:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | muted (0.062) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.08:1 |
| White text | 10.07:1 |
Values
| HEX | #613633 |
| RGB | rgb(97, 54, 51) |
| HSL | hsl(4, 31%, 29%) |
| OKLCH | oklch(38.6% 0.062 24.6) |
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 #613633 | 10.07:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #613633 | 2.08:1 | Fails | Lc 10.7 | Not readable |
| #613633 text on white | 10.07:1 | AAA | Lc 93.2 | Preferred for body text |
| #613633 text on black | 2.08:1 | Fails | Lc -9.3 | 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
#F3E7E5
oklch(93.7% 0.013 28.9)
-
Step 200
200
#EAD3D1
oklch(88.5% 0.026 23.6)
-
Step 300
300
#DDB6B2
oklch(80.9% 0.046 25)
-
Step 400
400
#CB8F89
oklch(70.7% 0.074 25.5)
-
Step 500
500
#BC726C
oklch(63.1% 0.095 25.1)
-
Step 600
600
#A85954
oklch(55.6% 0.104 24.8)
-
Step 700
700
#904945
oklch(49.2% 0.097 24.5)
-
Step 800
800
#753C39
oklch(42.7% 0.08 24.1)
-
Step 900
900 (this color)
#613633
oklch(38.6% 0.062 24.6)
-
Step 950
950
#381F1D
oklch(27.2% 0.039 24.9)
#613633 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) | #3F3D33 | 0.065 |
| Deuteranopia (no green cones) | #4A4532 | 0.060 |
| Tritanopia (no blue cones) | #693035 | 0.022 |
| Achromatopsia (no color) | #424242 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613633
#613633
oklch(38.6% 0.062 24.6)
- #0A4D53
#0A4D53
oklch(38.5% 0.062 204.4)
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 #613633, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.023
- Chestnut #742802 ΔE 0.059
- Brownish Purple #76424E ΔE 0.065
- Charcoal Grey #3C4142 ΔE 0.071
- Mud Brown #60460F ΔE 0.073
- Reddy Brown #6E1005 ΔE 0.077
- Onyx #343A40 ΔE 0.083
- Wine Red #7B0323 ΔE 0.086
Use #613633 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.