#37191F
Closest named color: Dark Brown (#341C02). oklch(25.8% 0.048 8.3), rgb(55, 25, 31).
Aa
White text reads best on this color (15.89:1).
About this color
#37191F is a dark, muted red. In OKLCH its lightness is 26%, its chroma 0.048 and its hue 8°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.049 away. White text reads best on it, at 15.89:1.
| Hue family | Reds |
| Lightness | dark (26%) |
| Chroma | muted (0.048) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.32:1 |
| White text | 15.89:1 |
Values
| HEX | #37191F |
| RGB | rgb(55, 25, 31) |
| HSL | hsl(348, 38%, 16%) |
| OKLCH | oklch(25.8% 0.048 8.3) |
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 #37191F | 15.89:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #37191F | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #37191F text on white | 15.89:1 | AAA | Lc 102.7 | Preferred for body text |
| #37191F text on black | 1.32:1 | 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
#F4E6E8
oklch(93.7% 0.015 7.5)
-
Step 200
200
#EDD1D5
oklch(88.5% 0.032 8)
-
Step 300
300
#E2B2B9
oklch(80.9% 0.056 8.6)
-
Step 400
400
#D28995
oklch(70.8% 0.09 8.9)
-
Step 500
500
#C4697C
oklch(63% 0.117 7.7)
-
Step 600
600
#AF4F65
oklch(55.5% 0.127 7.8)
-
Step 700
700
#964053
oklch(49.1% 0.117 8.7)
-
Step 800
800
#7A3544
oklch(42.6% 0.097 8.5)
-
Step 900
900
#632F3A
oklch(37.8% 0.076 8)
-
Step 950
950 (this color)
#37191F
oklch(25.8% 0.048 8.3)
#37191F 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) | #1E1F1F | 0.054 |
| Deuteranopia (no green cones) | #26241E | 0.048 |
| Tritanopia (no blue cones) | #3C161B | 0.013 |
| Achromatopsia (no color) | #222222 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37191F
#37191F
oklch(25.8% 0.048 8.3)
- #002A28
#002A28
oklch(25.7% 0.044 189.9)
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 #37191F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.049
- Chocolate Brown #411900 ΔE 0.049
- Jet #212529 ΔE 0.054
- Dark Maroon #3C0008 ΔE 0.056
- Deep Brown #410200 ΔE 0.057
- Mahogany #4A0100 ΔE 0.062
- Dark Plum #3F012C ΔE 0.063
- Dark #1B2431 ΔE 0.064
Use #37191F 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.