#370103
Closest named color: Dark Maroon (#3C0008). oklch(21.4% 0.085 25.9), rgb(55, 1, 3).
Aa
White text reads best on this color (17.97:1).
About this color
#370103 is a very dark, moderately saturated red. In OKLCH its lightness is 21%, its chroma 0.085 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.015 away. White text reads best on it, at 17.97:1.
| Hue family | Reds |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.085) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.16:1 |
| White text | 17.97:1 |
Values
| HEX | #370103 |
| RGB | rgb(55, 1, 3) |
| HSL | hsl(358, 96%, 11%) |
| OKLCH | oklch(21.4% 0.085 25.9) |
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 #370103 | 17.97:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #370103 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #370103 text on white | 17.97:1 | AAA | Lc 103.8 | Preferred for body text |
| #370103 text on black | 1.16:1 | 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
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FDE3E0
oklch(93.6% 0.029 25.6)
-
Step 200
200
#FCCCC6
oklch(88.5% 0.055 26.5)
-
Step 300
300
#FBA79F
oklch(80.9% 0.101 25.5)
-
Step 400
400
#F4736A
oklch(70.6% 0.16 26)
-
Step 500
500
#EC4442
oklch(63.2% 0.205 25.8)
-
Step 600
600
#D70A20
oklch(55.6% 0.223 26)
-
Step 700
700
#B70018
oklch(49.1% 0.199 25.9)
-
Step 800
800
#970413
oklch(42.7% 0.171 26)
-
Step 900
900
#791617
oklch(37.7% 0.133 26)
-
Step 950
950 (this color)
#370103
oklch(21.4% 0.085 25.9)
#370103 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) | #120F03 | 0.092 |
| Deuteranopia (no green cones) | #201B01 | 0.084 |
| Tritanopia (no blue cones) | #3E0002 | 0.018 |
| Achromatopsia (no color) | #171717 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #370103
#370103
oklch(21.4% 0.085 25.9)
- #001E21
#001E21
oklch(21.4% 0.037 204.1)
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 #370103, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.015
- Deep Brown #410200 ΔE 0.027
- Mahogany #4A0100 ΔE 0.049
- Chocolate Brown #411900 ΔE 0.066
- Dark Brown #341C02 ΔE 0.067
- Very Dark Brown #1D0200 ΔE 0.070
- Dark Plum #3F012C ΔE 0.076
- Aubergine #3D0734 ΔE 0.088
Use #370103 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.