#311003
Closest named color: Dark Brown (#341C02). oklch(22.4% 0.059 42.7), rgb(49, 16, 3).
Aa
White text reads best on this color (17.41:1).
About this color
#311003 is a very dark, muted brown. In OKLCH its lightness is 22%, its chroma 0.059 and its hue 43°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.037 away. White text reads best on it, at 17.41:1.
| Hue family | Browns |
| Lightness | very dark (22%) |
| Chroma | muted (0.059) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.20:1 |
| White text | 17.41:1 |
Values
| HEX | #311003 |
| RGB | rgb(49, 16, 3) |
| HSL | hsl(17, 88%, 10%) |
| OKLCH | oklch(22.4% 0.059 42.7) |
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 #311003 | 17.41:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #311003 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #311003 text on white | 17.41:1 | AAA | Lc 104.0 | Preferred for body text |
| #311003 text on black | 1.20:1 | 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
#FBF4F1
oklch(97.2% 0.009 44.9)
-
Step 100
100
#F6E6DF
oklch(93.6% 0.02 45.3)
-
Step 200
200
#F1D2C5
oklch(88.6% 0.039 44.1)
-
Step 300
300
#E8B39D
oklch(80.9% 0.069 43.6)
-
Step 400
400
#DB8967
oklch(70.8% 0.111 43.1)
-
Step 500
500
#CF683C
oklch(63.1% 0.143 42.6)
-
Step 600
600
#BA4D15
oklch(55.6% 0.154 43)
-
Step 700
700
#A03D04
oklch(49.1% 0.144 42.9)
-
Step 800
800
#82330B
oklch(42.7% 0.119 42.7)
-
Step 900
900
#692E13
oklch(37.8% 0.093 43.1)
-
Step 950
950 (this color)
#311003
oklch(22.4% 0.059 42.7)
#311003 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) | #191502 | 0.057 |
| Deuteranopia (no green cones) | #211D02 | 0.052 |
| Tritanopia (no blue cones) | #37080D | 0.030 |
| Achromatopsia (no color) | #1A1A1A | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #311003
#311003
oklch(22.4% 0.059 42.7)
- #001F29
#001F29
oklch(22.2% 0.041 223)
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 #311003, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.037
- Deep Brown #410200 ΔE 0.042
- Dark Maroon #3C0008 ΔE 0.042
- Chocolate Brown #411900 ΔE 0.049
- Mahogany #4A0100 ΔE 0.060
- Very Dark Brown #1D0200 ΔE 0.073
- Jet #212529 ΔE 0.078
- Dark #1B2431 ΔE 0.090
Use #311003 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.