#551B04
Closest named color: Chocolate Brown (#411900). oklch(31.1% 0.092 39.8), rgb(85, 27, 4).
Aa
White text reads best on this color (13.59:1).
About this color
#551B04 is a dark, moderately saturated red. In OKLCH its lightness is 31%, its chroma 0.092 and its hue 40°. Its hue sits on the warm side of the wheel. The nearest named color is Chocolate Brown (#411900), ΔE 0.048 away. White text reads best on it, at 13.59:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.092) |
| Temperature | warm |
| Nearest name | Chocolate Brown (#411900) |
| Black text | 1.54:1 |
| White text | 13.59:1 |
Values
| HEX | #551B04 |
| RGB | rgb(85, 27, 4) |
| HSL | hsl(17, 91%, 17%) |
| OKLCH | oklch(31.1% 0.092 39.8) |
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 #551B04 | 13.59:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #551B04 | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #551B04 text on white | 13.59:1 | AAA | Lc 99.5 | Preferred for body text |
| #551B04 text on black | 1.54:1 | 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
#FFF2EE
oklch(97% 0.015 37.9)
-
Step 100
100
#FEE3DA
oklch(93.5% 0.032 39.3)
-
Step 200
200
#FECCBC
oklch(88.5% 0.061 38.5)
-
Step 300
300
#FDA88B
oklch(80.8% 0.109 39.6)
-
Step 400
400
#F87343
oklch(70.6% 0.175 39.7)
-
Step 500
500
#E75000
oklch(63.2% 0.199 39.9)
-
Step 600
600
#C34200
oklch(55.6% 0.175 39.8)
-
Step 700
700
#A53700
oklch(49.2% 0.154 40)
-
Step 800
800
#882C00
oklch(42.7% 0.134 40.1)
-
Step 900
900
#732300
oklch(37.7% 0.119 39.6)
-
Step 950
950 (this color)
#551B04
oklch(31.1% 0.092 39.8)
#551B04 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) | #2C2601 | 0.091 |
| Deuteranopia (no green cones) | #3A3302 | 0.083 |
| Tritanopia (no blue cones) | #5E0B17 | 0.041 |
| Achromatopsia (no color) | #2E2E2E | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #551B04
#551B04
oklch(31.1% 0.092 39.8)
- #003744
#003744
oklch(31.1% 0.056 219.3)
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 #551B04, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chocolate Brown #411900 ΔE 0.048
- Reddy Brown #6E1005 ΔE 0.055
- Mahogany #4A0100 ΔE 0.057
- Claret #680018 ΔE 0.059
- Burgundy #610023 ΔE 0.066
- Deep Brown #410200 ΔE 0.074
- Dark Brown #341C02 ΔE 0.075
- Blood #770001 ΔE 0.075
Use #551B04 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.