#613B21
Closest named color: Mud Brown (#60460F). oklch(39.2% 0.066 53.9), rgb(97, 59, 33).
Aa
White text reads best on this color (9.74:1).
About this color
#613B21 is a dark, muted brown. In OKLCH its lightness is 39%, its chroma 0.066 and its hue 54°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.041 away. White text reads best on it, at 9.74:1.
| Hue family | Browns |
| Lightness | dark (39%) |
| Chroma | muted (0.066) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.15:1 |
| White text | 9.74:1 |
Values
| HEX | #613B21 |
| RGB | rgb(97, 59, 33) |
| HSL | hsl(24, 49%, 25%) |
| OKLCH | oklch(39.2% 0.066 53.9) |
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 #613B21 | 9.74:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #613B21 | 2.15:1 | Fails | Lc 11.6 | Not readable |
| #613B21 text on white | 9.74:1 | AAA | Lc 92.4 | Preferred for body text |
| #613B21 text on black | 2.15:1 | Fails | Lc -10.0 | 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
#F9F4F1
oklch(97% 0.007 53.4)
-
Step 100
100
#F2E8E1
oklch(93.7% 0.014 57.6)
-
Step 200
200
#E9D5C8
oklch(88.6% 0.028 55.3)
-
Step 300
300
#DBB9A3
oklch(81% 0.05 54.8)
-
Step 400
400
#C89371
oklch(70.6% 0.08 53.7)
-
Step 500
500
#B9784B
oklch(63.1% 0.102 54.5)
-
Step 600
600
#A55F2D
oklch(55.6% 0.111 53.5)
-
Step 700
700
#8D4E20
oklch(49.1% 0.103 53.4)
-
Step 800
800
#72411C
oklch(42.7% 0.085 54.9)
-
Step 900
900 (this color)
#613B21
oklch(39.2% 0.066 53.9)
-
Step 950
950
#362012
oklch(26.8% 0.042 52.6)
#613B21 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) | #463F1F | 0.052 |
| Deuteranopia (no green cones) | #4F4721 | 0.047 |
| Tritanopia (no blue cones) | #6A3335 | 0.045 |
| Achromatopsia (no color) | #444444 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613B21
#613B21
oklch(39.2% 0.066 53.9)
- #1A4B64
#1A4B64
oklch(39.2% 0.067 234.5)
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 #613B21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.041
- Purple Brown #673A3F ΔE 0.047
- Chestnut #742802 ΔE 0.053
- Green Brown #544E03 ΔE 0.072
- Charcoal Grey #3C4142 ΔE 0.076
- Brownish Purple #76424E ΔE 0.079
- Olive Brown #645403 ΔE 0.083
- Milk Chocolate #7F4E1E ΔE 0.083
Use #613B21 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.