#613C3C
Closest named color: Purple Brown (#673A3F). oklch(40% 0.053 19.6), rgb(97, 60, 60).
Aa
White text reads best on this color (9.46:1).
About this color
#613C3C is a dark, muted red. In OKLCH its lightness is 40%, its chroma 0.053 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.014 away. White text reads best on it, at 9.46:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | muted (0.053) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.21:1 |
| White text | 9.46:1 |
Values
| HEX | #613C3C |
| RGB | rgb(97, 60, 60) |
| HSL | hsl(0, 24%, 31%) |
| OKLCH | oklch(40% 0.053 19.6) |
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 #613C3C | 9.46:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #613C3C | 2.21:1 | Fails | Lc 12.2 | Not readable |
| #613C3C text on white | 9.46:1 | AAA | Lc 91.8 | Preferred for body text |
| #613C3C text on black | 2.21:1 | Fails | Lc -10.6 | 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
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F1E7E7
oklch(93.6% 0.011 17.4)
-
Step 200
200
#E7D4D3
oklch(88.5% 0.021 21.2)
-
Step 300
300
#D9B7B6
oklch(80.9% 0.039 20)
-
Step 400
400
#C59191
oklch(70.7% 0.063 18.8)
-
Step 500
500
#B57675
oklch(63.1% 0.08 20.5)
-
Step 600
600
#A05E5E
oklch(55.6% 0.087 20.2)
-
Step 700
700
#894D4E
oklch(49.1% 0.081 19.4)
-
Step 800
800
#6F3F40
oklch(42.6% 0.067 18.9)
-
Step 900
900 (this color)
#613C3C
oklch(40% 0.053 19.6)
-
Step 950
950
#352020
oklch(27% 0.033 19.4)
#613C3C 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) | #43423C | 0.056 |
| Deuteranopia (no green cones) | #4C493B | 0.053 |
| Tritanopia (no blue cones) | #68383C | 0.017 |
| Achromatopsia (no color) | #464646 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613C3C
#613C3C
oklch(40% 0.053 19.6)
- #1F5053
#1F5053
oklch(39.9% 0.052 200.8)
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 #613C3C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.014
- Brownish Purple #76424E ΔE 0.052
- Charcoal Grey #3C4142 ΔE 0.066
- Mud Brown #60460F ΔE 0.071
- Chestnut #742802 ΔE 0.071
- Onyx #343A40 ΔE 0.083
- Red Brown #8B2E16 ΔE 0.090
- Dark Slate Gray #2F4F4F ΔE 0.090
Use #613C3C 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.