#37191D
Closest named color: Dark Brown (#341C02). oklch(25.8% 0.048 12.5), rgb(55, 25, 29).
Aa
White text reads best on this color (15.91:1).
About this color
#37191D is a dark, muted red. In OKLCH its lightness is 26%, its chroma 0.048 and its hue 13°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.045 away. White text reads best on it, at 15.91:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | muted (0.048) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.31:1 |
| White text | 15.91:1 |
Values
| HEX | #37191D |
| RGB | rgb(55, 25, 29) |
| HSL | hsl(352, 38%, 16%) |
| OKLCH | oklch(25.8% 0.048 12.5) |
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 #37191D | 15.91:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #37191D | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #37191D text on white | 15.91:1 | AAA | Lc 102.7 | Preferred for body text |
| #37191D text on black | 1.31:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#FAF3F4
oklch(97% 0.008 7.3)
-
Step 100
100
#F5E6E7
oklch(93.7% 0.016 12.8)
-
Step 200
200
#EDD1D3
oklch(88.5% 0.031 12.8)
-
Step 300
300
#E3B2B6
oklch(80.9% 0.057 12.9)
-
Step 400
400
#D28991
oklch(70.7% 0.09 12.5)
-
Step 500
500
#C56A76
oklch(63.1% 0.116 12.6)
-
Step 600
600
#B0505F
oklch(55.6% 0.126 12.4)
-
Step 700
700
#97404E
oklch(49.1% 0.117 12.6)
-
Step 800
800
#7B3540
oklch(42.7% 0.098 12.5)
-
Step 900
900
#632F36
oklch(37.7% 0.075 12.9)
-
Step 950
950 (this color)
#37191D
oklch(25.8% 0.048 12.5)
#37191D 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) | #1F1E1D | 0.051 |
| Deuteranopia (no green cones) | #26241C | 0.048 |
| Tritanopia (no blue cones) | #3C161A | 0.013 |
| Achromatopsia (no color) | #222222 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37191D
#37191D
oklch(25.8% 0.048 12.5)
- #002A29
#002A29
oklch(25.8% 0.044 192.3)
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 #37191D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.045
- Chocolate Brown #411900 ΔE 0.046
- Jet #212529 ΔE 0.054
- Dark Maroon #3C0008 ΔE 0.054
- Deep Brown #410200 ΔE 0.055
- Mahogany #4A0100 ΔE 0.060
- Dark #1B2431 ΔE 0.065
- Dark Plum #3F012C ΔE 0.066
Use #37191D 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.