#613F3C
Closest named color: Purple Brown (#673A3F). oklch(40.6% 0.048 25), rgb(97, 63, 60).
Aa
White text reads best on this color (9.19:1).
About this color
#613F3C is a dark, muted red. In OKLCH its lightness is 41%, its chroma 0.048 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.019 away. White text reads best on it, at 9.19:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | muted (0.048) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.28:1 |
| White text | 9.19:1 |
Values
| HEX | #613F3C |
| RGB | rgb(97, 63, 60) |
| HSL | hsl(5, 24%, 31%) |
| OKLCH | oklch(40.6% 0.048 25) |
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 #613F3C | 9.19:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #613F3C | 2.28:1 | Fails | Lc 12.9 | Not readable |
| #613F3C text on white | 9.19:1 | AAA | Lc 91.1 | Preferred for body text |
| #613F3C text on black | 2.28:1 | Fails | Lc -11.3 | 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 800.
-
Step 50
50
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#EFE8E7
oklch(93.6% 0.008 27.2)
-
Step 200
200
#E3D5D4
oklch(88.4% 0.016 22.4)
-
Step 300
300
#D2BAB7
oklch(80.8% 0.028 26.2)
-
Step 400
400
#BB9692
oklch(70.6% 0.045 25.4)
-
Step 500
500
#AA7C78
oklch(63.1% 0.058 24.5)
-
Step 600
600
#956561
oklch(55.6% 0.063 24.6)
-
Step 700
700
#7F5450
oklch(49.2% 0.058 25.3)
-
Step 800
800 (this color)
#613F3C
oklch(40.6% 0.048 25)
-
Step 900
900
#543A37
oklch(37.7% 0.038 26.4)
-
Step 950
950
#312221
oklch(27% 0.023 23.1)
#613F3C 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) | #46443C | 0.050 |
| Deuteranopia (no green cones) | #4E4A3C | 0.046 |
| Tritanopia (no blue cones) | #683B3E | 0.018 |
| Achromatopsia (no color) | #484848 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613F3C
#613F3C
oklch(40.6% 0.048 25)
- #265156
#265156
oklch(40.6% 0.048 205.4)
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 #613F3C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.019
- Brownish Purple #76424E ΔE 0.051
- Mud Brown #60460F ΔE 0.065
- Charcoal Grey #3C4142 ΔE 0.065
- Chestnut #742802 ΔE 0.073
- Onyx #343A40 ΔE 0.085
- Dark Slate Gray #2F4F4F ΔE 0.086
- Milk Chocolate #7F4E1E ΔE 0.088
Use #613F3C 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.