#37101D
Closest named color: Dark Maroon (#3C0008). oklch(24.2% 0.064 2.4), rgb(55, 16, 29).
Aa
White text reads best on this color (16.74:1).
About this color
#37101D is a very dark, muted red. In OKLCH its lightness is 24%, its chroma 0.064 and its hue 2°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.039 away. White text reads best on it, at 16.74:1.
| Hue family | Reds |
| Lightness | very dark (24%) |
| Chroma | muted (0.064) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.25:1 |
| White text | 16.74:1 |
Values
| HEX | #37101D |
| RGB | rgb(55, 16, 29) |
| HSL | hsl(340, 55%, 14%) |
| OKLCH | oklch(24.2% 0.064 2.4) |
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 #37101D | 16.74:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #37101D | 1.25:1 | Fails | Lc 0.0 | Not readable |
| #37101D text on white | 16.74:1 | AAA | Lc 103.3 | Preferred for body text |
| #37101D text on black | 1.25:1 | 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
#FCF3F5
oklch(97.2% 0.01 2)
-
Step 100
100
#F8E4E8
oklch(93.6% 0.022 3.8)
-
Step 200
200
#F2CED7
oklch(88.4% 0.042 1.2)
-
Step 300
300
#EBADBC
oklch(80.9% 0.075 2.9)
-
Step 400
400
#DE7F9A
oklch(70.7% 0.121 2.4)
-
Step 500
500
#D25B81
oklch(63.1% 0.154 2.6)
-
Step 600
600
#BD3D6B
oklch(55.6% 0.168 2.3)
-
Step 700
700
#A32E59
oklch(49.2% 0.156 2.5)
-
Step 800
800
#842849
oklch(42.7% 0.129 2.3)
-
Step 900
900
#6B263D
oklch(37.8% 0.101 2.5)
-
Step 950
950 (this color)
#37101D
oklch(24.2% 0.064 2.4)
#37101D 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) | #17191D | 0.072 |
| Deuteranopia (no green cones) | #22201C | 0.063 |
| Tritanopia (no blue cones) | #3C0C15 | 0.018 |
| Achromatopsia (no color) | #1E1E1E | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37101D
#37101D
oklch(24.2% 0.064 2.4)
- #002621
#002621
oklch(24.1% 0.043 182)
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 #37101D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.039
- Dark Plum #3F012C ΔE 0.047
- Deep Brown #410200 ΔE 0.049
- Aubergine #3D0734 ΔE 0.052
- Eggplant #380835 ΔE 0.053
- Mahogany #4A0100 ΔE 0.058
- Chocolate Brown #411900 ΔE 0.061
- Dark Brown #341C02 ΔE 0.063
Use #37101D 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.