#5B573F
Closest named color: Olive Brown (#645403). oklch(45.4% 0.037 99.7), rgb(91, 87, 63).
Aa
White text reads best on this color (7.29:1).
About this color
#5B573F is a medium-dark, muted brown. In OKLCH its lightness is 45%, its chroma 0.037 and its hue 100°. Its hue sits on the warm side of the wheel. The nearest named color is Olive Brown (#645403), ΔE 0.054 away. White text reads best on it, at 7.29:1.
| Hue family | Browns |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.037) |
| Temperature | warm |
| Nearest name | Olive Brown (#645403) |
| Black text | 2.87:1 |
| White text | 7.29:1 |
Values
| HEX | #5B573F |
| RGB | rgb(91, 87, 63) |
| HSL | hsl(51, 18%, 30%) |
| OKLCH | oklch(45.4% 0.037 99.7) |
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 #5B573F | 7.29:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #5B573F | 2.87:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #5B573F text on white | 7.29:1 | AAA | Lc 85.3 | Fine for body text |
| #5B573F text on black | 2.87:1 | Fails | Lc -16.7 | Dividers and decoration only |
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
#F6F5F3
oklch(97% 0.003 84.6)
-
Step 100
100
#EBEAE5
oklch(93.6% 0.007 97.4)
-
Step 200
200
#DBD9D0
oklch(88.4% 0.012 96.4)
-
Step 300
300
#C4C1B1
oklch(80.9% 0.022 98.2)
-
Step 400
400
#A5A189
oklch(70.6% 0.034 99.4)
-
Step 500
500
#908A6C
oklch(63.1% 0.043 98)
-
Step 600
600
#7A7453
oklch(55.6% 0.048 99.1)
-
Step 700
700
#676244
oklch(49.3% 0.045 99.8)
-
Step 800
800 (this color)
#5B573F
oklch(45.4% 0.037 99.7)
-
Step 900
900
#454230
oklch(37.7% 0.029 99.7)
-
Step 950
950
#28271C
oklch(27% 0.019 103.3)
#5B573F 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) | #5C553D | 0.006 |
| Deuteranopia (no green cones) | #5D5740 | 0.004 |
| Tritanopia (no blue cones) | #5F5451 | 0.034 |
| Achromatopsia (no color) | #565656 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B573F
#5B573F
oklch(45.4% 0.037 99.7)
- #52546B
#52546B
oklch(45.3% 0.038 280.9)
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 #5B573F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Olive Brown #645403 ΔE 0.054
- Mud Brown #60460F ΔE 0.060
- Green Brown #544E03 ΔE 0.062
- Mud #735C12 ΔE 0.064
- Camo Green #526525 ΔE 0.064
- Army Green #4B5D16 ΔE 0.065
- Milk Chocolate #7F4E1E ΔE 0.068
- Greeny Brown #696006 ΔE 0.068
Use #5B573F 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.