#5B403B
Closest named color: Purple Brown (#673A3F). oklch(40% 0.039 30.7), rgb(91, 64, 59).
Aa
White text reads best on this color (9.36:1).
About this color
#5B403B is a dark, muted red. In OKLCH its lightness is 40%, its chroma 0.039 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.030 away. White text reads best on it, at 9.36:1.
| Hue family | Reds |
| Lightness | dark (40%) |
| Chroma | muted (0.039) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.24:1 |
| White text | 9.36:1 |
Values
| HEX | #5B403B |
| RGB | rgb(91, 64, 59) |
| HSL | hsl(9, 21%, 29%) |
| OKLCH | oklch(40% 0.039 30.7) |
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 #5B403B | 9.36:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #5B403B | 2.24:1 | Fails | Lc 12.4 | Not readable |
| #5B403B text on white | 9.36:1 | AAA | Lc 91.6 | Preferred for body text |
| #5B403B text on black | 2.24:1 | Fails | Lc -10.8 | 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
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#EFE8E6
oklch(93.6% 0.008 36.6)
-
Step 200
200
#E4D5D3
oklch(88.5% 0.017 26.7)
-
Step 300
300
#D3BAB5
oklch(80.9% 0.03 31.2)
-
Step 400
400
#BC968F
oklch(70.6% 0.047 30.3)
-
Step 500
500
#AB7C74
oklch(63.1% 0.06 29.7)
-
Step 600
600
#96655C
oklch(55.6% 0.066 30.8)
-
Step 700
700
#80544C
oklch(49.2% 0.061 30.7)
-
Step 800
800
#68453E
oklch(42.8% 0.05 31.7)
-
Step 900
900 (this color)
#5B403B
oklch(40% 0.039 30.7)
-
Step 950
950
#32221F
oklch(27.1% 0.025 30.8)
#5B403B 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) | #46433B | 0.038 |
| Deuteranopia (no green cones) | #4C493B | 0.037 |
| Tritanopia (no blue cones) | #613D3F | 0.017 |
| Achromatopsia (no color) | #464646 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B403B
#5B403B
oklch(40% 0.039 30.7)
- #2E4E54
#2E4E54
oklch(40.2% 0.039 210.7)
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 #5B403B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.030
- Charcoal Grey #3C4142 ΔE 0.054
- Brownish Purple #76424E ΔE 0.061
- Mud Brown #60460F ΔE 0.062
- Onyx #343A40 ΔE 0.074
- Dark Slate Gray #2F4F4F ΔE 0.076
- Chestnut #742802 ΔE 0.079
- Charcoal #264653 ΔE 0.086
Use #5B403B 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.