#33181A
Closest named color: Dark Brown (#341C02). oklch(24.8% 0.043 16), rgb(51, 24, 26).
Aa
White text reads best on this color (16.32:1).
About this color
#33181A is a very dark, muted red. In OKLCH its lightness is 25%, its chroma 0.043 and its hue 16°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Brown (#341C02), ΔE 0.042 away. White text reads best on it, at 16.32:1.
| Hue family | Reds |
| Lightness | very dark (25%) |
| Chroma | muted (0.043) |
| Temperature | warm |
| Nearest name | Dark Brown (#341C02) |
| Black text | 1.28:1 |
| White text | 16.32:1 |
Values
| HEX | #33181A |
| RGB | rgb(51, 24, 26) |
| HSL | hsl(356, 36%, 15%) |
| OKLCH | oklch(24.8% 0.043 16) |
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 #33181A | 16.32:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #33181A | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #33181A text on white | 16.32:1 | AAA | Lc 103.1 | Preferred for body text |
| #33181A text on black | 1.28:1 | 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
#FAF4F4
oklch(97.2% 0.006 17.3)
-
Step 100
100
#F4E6E6
oklch(93.6% 0.015 17.4)
-
Step 200
200
#EBD2D3
oklch(88.5% 0.028 14.9)
-
Step 300
300
#E0B4B5
oklch(80.9% 0.051 16.7)
-
Step 400
400
#CF8C8F
oklch(70.8% 0.082 16.4)
-
Step 500
500
#C06E74
oklch(63.1% 0.104 15.8)
-
Step 600
600
#AC555C
oklch(55.7% 0.114 16.5)
-
Step 700
700
#93444C
oklch(49% 0.107 15.6)
-
Step 800
800
#77393E
oklch(42.7% 0.087 16.4)
-
Step 900
900
#613135
oklch(37.7% 0.069 15.7)
-
Step 950
950 (this color)
#33181A
oklch(24.8% 0.043 16)
#33181A 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) | #1D1D1A | 0.048 |
| Deuteranopia (no green cones) | #242219 | 0.044 |
| Tritanopia (no blue cones) | #381519 | 0.013 |
| Achromatopsia (no color) | #202020 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33181A
#33181A
oklch(24.8% 0.043 16)
- #002728
#002728
oklch(24.7% 0.042 197.4)
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 #33181A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Brown #341C02 ΔE 0.042
- Chocolate Brown #411900 ΔE 0.048
- Jet #212529 ΔE 0.052
- Dark Maroon #3C0008 ΔE 0.053
- Deep Brown #410200 ΔE 0.054
- Dark #1B2431 ΔE 0.062
- Mahogany #4A0100 ΔE 0.064
- Dark Plum #3F012C ΔE 0.070
Use #33181A 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.