#551B21
Closest named color: Burgundy (#610023). oklch(31.5% 0.086 17.5), rgb(85, 27, 33).
Aa
White text reads best on this color (13.41:1).
About this color
#551B21 is a dark, moderately saturated red. In OKLCH its lightness is 32%, its chroma 0.086 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.042 away. White text reads best on it, at 13.41:1.
| Hue family | Reds |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.086) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.56:1 |
| White text | 13.41:1 |
Values
| HEX | #551B21 |
| RGB | rgb(85, 27, 33) |
| HSL | hsl(354, 52%, 22%) |
| OKLCH | oklch(31.5% 0.086 17.5) |
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 #551B21 | 13.41:1 | AAA | Lc -102.5 | Preferred for body text |
| Black text on #551B21 | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #551B21 text on white | 13.41:1 | AAA | Lc 99.3 | Preferred for body text |
| #551B21 text on black | 1.56:1 | 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
#FFF2F2
oklch(97.1% 0.014 17.4)
-
Step 100
100
#FDE2E3
oklch(93.5% 0.03 15.1)
-
Step 200
200
#FDCBCB
oklch(88.6% 0.057 18.3)
-
Step 300
300
#FBA6A8
oklch(80.9% 0.101 18)
-
Step 400
400
#F5707A
oklch(70.7% 0.163 17.6)
-
Step 500
500
#EC3F59
oklch(63.1% 0.208 17.4)
-
Step 600
600
#D60040
oklch(55.6% 0.222 17.4)
-
Step 700
700
#B50035
oklch(49% 0.196 17.2)
-
Step 800
800
#96002A
oklch(42.7% 0.171 17.4)
-
Step 900
900
#791225
oklch(37.6% 0.136 17.6)
-
Step 950
950 (this color)
#551B21
oklch(31.5% 0.086 17.5)
#551B21 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) | #292721 | 0.094 |
| Deuteranopia (no green cones) | #383320 | 0.085 |
| Tritanopia (no blue cones) | #5D101D | 0.022 |
| Achromatopsia (no color) | #2F2F2F | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #551B21
#551B21
oklch(31.5% 0.086 17.5)
- #003A3B
#003A3B
oklch(31.6% 0.054 196.7)
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 #551B21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.042
- Claret #680018 ΔE 0.047
- Reddy Brown #6E1005 ΔE 0.059
- Mahogany #4A0100 ΔE 0.063
- Chocolate Brown #411900 ΔE 0.064
- Blood #770001 ΔE 0.077
- Deep Brown #410200 ΔE 0.080
- Merlot #730039 ΔE 0.081
Use #551B21 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.