#551B1B
Closest named color: Burgundy (#610023). oklch(31.4% 0.087 23.5), rgb(85, 27, 27).
Aa
White text reads best on this color (13.47:1).
About this color
#551B1B is a dark, moderately saturated red. In OKLCH its lightness is 31%, its chroma 0.087 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.047 away. White text reads best on it, at 13.47:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.087) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.55:1 |
| White text | 13.47:1 |
Values
| HEX | #551B1B |
| RGB | rgb(85, 27, 27) |
| HSL | hsl(0, 52%, 22%) |
| OKLCH | oklch(31.4% 0.087 23.5) |
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 #551B1B | 13.47:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #551B1B | 1.55:1 | Fails | Lc 0.0 | Not readable |
| #551B1B text on white | 13.47:1 | AAA | Lc 99.4 | Preferred for body text |
| #551B1B text on black | 1.55:1 | 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
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FDE3E0
oklch(93.6% 0.029 25.6)
-
Step 200
200
#FDCBC7
oklch(88.5% 0.057 23.6)
-
Step 300
300
#FCA6A1
oklch(80.8% 0.103 23.2)
-
Step 400
400
#F6716E
oklch(70.7% 0.164 23.5)
-
Step 500
500
#ED4047
oklch(63% 0.209 23.6)
-
Step 600
600
#D8002A
oklch(55.6% 0.225 23.5)
-
Step 700
700
#B70022
oklch(49.2% 0.199 23.5)
-
Step 800
800
#97001A
oklch(42.7% 0.172 23.6)
-
Step 900
900
#7A131B
oklch(37.7% 0.136 23.4)
-
Step 950
950 (this color)
#551B1B
oklch(31.4% 0.087 23.5)
#551B1B 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) | #2A271B | 0.093 |
| Deuteranopia (no green cones) | #393319 | 0.085 |
| Tritanopia (no blue cones) | #5E0F1C | 0.026 |
| Achromatopsia (no color) | #2F2F2F | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #551B1B
#551B1B
oklch(31.4% 0.087 23.5)
- #00393D
#00393D
oklch(31.4% 0.053 202.5)
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 #551B1B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.047
- Claret #680018 ΔE 0.048
- Reddy Brown #6E1005 ΔE 0.056
- Chocolate Brown #411900 ΔE 0.058
- Mahogany #4A0100 ΔE 0.060
- Blood #770001 ΔE 0.075
- Deep Brown #410200 ΔE 0.077
- Dark Brown #341C02 ΔE 0.084
Use #551B1B 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.