#310D03
Closest named color: Dark Maroon (#3C0008). oklch(21.8% 0.062 38.3), rgb(49, 13, 3).
Aa
White text reads best on this color (17.65:1).
About this color
#310D03 is a very dark, muted red. In OKLCH its lightness is 22%, its chroma 0.062 and its hue 38°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Maroon (#3C0008), ΔE 0.037 away. White text reads best on it, at 17.65:1.
| Hue family | Reds |
| Lightness | very dark (22%) |
| Chroma | muted (0.062) |
| Temperature | warm |
| Nearest name | Dark Maroon (#3C0008) |
| Black text | 1.18:1 |
| White text | 17.65:1 |
Values
| HEX | #310D03 |
| RGB | rgb(49, 13, 3) |
| HSL | hsl(13, 88%, 10%) |
| OKLCH | oklch(21.8% 0.062 38.3) |
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 #310D03 | 17.65:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #310D03 | 1.18:1 | Fails | Lc 0.0 | Not readable |
| #310D03 text on white | 17.65:1 | AAA | Lc 104.1 | Preferred for body text |
| #310D03 text on black | 1.18:1 | 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
#FCF3F1
oklch(97.1% 0.01 32.5)
-
Step 100
100
#F7E5E0
oklch(93.5% 0.021 36)
-
Step 200
200
#F2D1C6
oklch(88.5% 0.04 39.3)
-
Step 300
300
#EBB19E
oklch(80.9% 0.073 38.9)
-
Step 400
400
#DF8569
oklch(70.6% 0.118 38)
-
Step 500
500
#D3633F
oklch(63% 0.151 38.3)
-
Step 600
600
#BF471C
oklch(55.7% 0.163 38.4)
-
Step 700
700
#A4370C
oklch(49% 0.152 38.4)
-
Step 800
800
#852F10
oklch(42.7% 0.125 38.4)
-
Step 900
900
#6B2B16
oklch(37.6% 0.097 38.3)
-
Step 950
950 (this color)
#310D03
oklch(21.8% 0.062 38.3)
#310D03 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) | #171402 | 0.063 |
| Deuteranopia (no green cones) | #201C02 | 0.058 |
| Tritanopia (no blue cones) | #37050B | 0.028 |
| Achromatopsia (no color) | #191919 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #310D03
#310D03
oklch(21.8% 0.062 38.3)
- #001E26
#001E26
oklch(21.7% 0.039 218.5)
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 #310D03, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Maroon #3C0008 ΔE 0.037
- Deep Brown #410200 ΔE 0.039
- Dark Brown #341C02 ΔE 0.045
- Chocolate Brown #411900 ΔE 0.054
- Mahogany #4A0100 ΔE 0.059
- Very Dark Brown #1D0200 ΔE 0.068
- Jet #212529 ΔE 0.083
- Dark Plum #3F012C ΔE 0.088
Use #310D03 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.