#613D21
Closest named color: Mud Brown (#60460F). oklch(39.6% 0.065 57.3), rgb(97, 61, 33).
Aa
White text reads best on this color (9.55:1).
About this color
#613D21 is a dark, muted brown. In OKLCH its lightness is 40%, its chroma 0.065 and its hue 57°. Its hue sits on the warm side of the wheel. The nearest named color is Mud Brown (#60460F), ΔE 0.036 away. White text reads best on it, at 9.55:1.
| Hue family | Browns |
| Lightness | dark (40%) |
| Chroma | muted (0.065) |
| Temperature | warm |
| Nearest name | Mud Brown (#60460F) |
| Black text | 2.19:1 |
| White text | 9.55:1 |
Values
| HEX | #613D21 |
| RGB | rgb(97, 61, 33) |
| HSL | hsl(26, 49%, 25%) |
| OKLCH | oklch(39.6% 0.065 57.3) |
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 #613D21 | 9.55:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #613D21 | 2.19:1 | Fails | Lc 12.0 | Not readable |
| #613D21 text on white | 9.55:1 | AAA | Lc 92.0 | Preferred for body text |
| #613D21 text on black | 2.19:1 | Fails | Lc -10.4 | 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
#E8D5C8
oklch(88.5% 0.028 56.7)
-
Step 300
300
#DAB9A2
oklch(80.8% 0.049 56.8)
-
Step 400
400
#C69470
oklch(70.6% 0.078 56.8)
-
Step 500
500
#B77949
oklch(63.1% 0.101 57.4)
-
Step 600
600
#A2612B
oklch(55.5% 0.108 57.3)
-
Step 700
700
#8B501D
oklch(49.1% 0.102 57.4)
-
Step 800
800
#71421A
oklch(42.8% 0.084 57.8)
-
Step 900
900 (this color)
#613D21
oklch(39.6% 0.065 57.3)
-
Step 950
950
#362111
oklch(27% 0.042 57.1)
#613D21 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) | #48401E | 0.048 |
| Deuteranopia (no green cones) | #504821 | 0.044 |
| Tritanopia (no blue cones) | #6A3636 | 0.044 |
| Achromatopsia (no color) | #454545 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613D21
#613D21
oklch(39.6% 0.065 57.3)
- #1F4C65
#1F4C65
oklch(39.7% 0.065 236)
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 #613D21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mud Brown #60460F ΔE 0.036
- Purple Brown #673A3F ΔE 0.049
- Chestnut #742802 ΔE 0.056
- Green Brown #544E03 ΔE 0.067
- Charcoal Grey #3C4142 ΔE 0.076
- Olive Brown #645403 ΔE 0.078
- Brownish Purple #76424E ΔE 0.078
- Milk Chocolate #7F4E1E ΔE 0.079
Use #613D21 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.