#51533F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(43.4% 0.032 112.4), rgb(81, 83, 63).
Aa
White text reads best on this color (7.89:1).
About this color
#51533F is a dark, muted brown. In OKLCH its lightness is 43%, its chroma 0.032 and its hue 112°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.056 away. White text reads best on it, at 7.89:1.
| Hue family | Browns |
| Lightness | dark (43%) |
| Chroma | muted (0.032) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.65:1 |
| White text | 7.89:1 |
Values
| HEX | #51533F |
| RGB | rgb(81, 83, 63) |
| HSL | hsl(66, 14%, 29%) |
| OKLCH | oklch(43.4% 0.032 112.4) |
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 #51533F | 7.89:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #51533F | 2.65:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #51533F text on white | 7.89:1 | AAA | Lc 87.4 | Fine for body text |
| #51533F text on black | 2.65:1 | Fails | Lc -14.7 | 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
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#EAEAE6
oklch(93.6% 0.005 106.5)
-
Step 200
200
#D9DAD2
oklch(88.5% 0.011 112.4)
-
Step 300
300
#C0C2B5
oklch(80.9% 0.018 113.9)
-
Step 400
400
#A0A38E
oklch(70.7% 0.03 113.8)
-
Step 500
500
#898C72
oklch(63% 0.038 112.8)
-
Step 600
600
#73765A
oklch(55.5% 0.042 112.7)
-
Step 700
700
#61634A
oklch(49.1% 0.038 111.5)
-
Step 800
800 (this color)
#51533F
oklch(43.4% 0.032 112.4)
-
Step 900
900
#424334
oklch(37.7% 0.025 110.7)
-
Step 950
950
#26271F
oklch(26.9% 0.014 113.2)
#51533F 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) | #56513E | 0.009 |
| Deuteranopia (no green cones) | #565240 | 0.009 |
| Tritanopia (no blue cones) | #54514E | 0.028 |
| Achromatopsia (no color) | #515151 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51533F
#51533F
oklch(43.4% 0.032 112.4)
- #514E61
#514E61
oklch(43.4% 0.031 292.3)
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 #51533F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.056
- Mud Brown #60460F ΔE 0.057
- Green Brown #544E03 ΔE 0.058
- Olive Brown #645403 ΔE 0.063
- Pine #2B5D34 ΔE 0.063
- Dark Green Blue #1F6357 ΔE 0.067
- Army Green #4B5D16 ΔE 0.067
- Charcoal Grey #3C4142 ΔE 0.072
Use #51533F 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.