#551818
Closest named color: Burgundy (#610023). oklch(30.9% 0.091 24.1), rgb(85, 24, 24).
Aa
White text reads best on this color (13.72:1).
About this color
#551818 is a dark, moderately saturated red. In OKLCH its lightness is 31%, its chroma 0.091 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Burgundy (#610023), ΔE 0.045 away. White text reads best on it, at 13.72:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.091) |
| Temperature | warm |
| Nearest name | Burgundy (#610023) |
| Black text | 1.53:1 |
| White text | 13.72:1 |
Values
| HEX | #551818 |
| RGB | rgb(85, 24, 24) |
| HSL | hsl(0, 56%, 21%) |
| OKLCH | oklch(30.9% 0.091 24.1) |
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 #551818 | 13.72:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #551818 | 1.53:1 | Fails | Lc 0.0 | Not readable |
| #551818 text on white | 13.72:1 | AAA | Lc 99.6 | Preferred for body text |
| #551818 text on black | 1.53:1 | 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
#FEE2E0
oklch(93.5% 0.031 22.6)
-
Step 200
200
#FECBC6
oklch(88.5% 0.059 24.8)
-
Step 300
300
#FFA59F
oklch(81% 0.108 23.9)
-
Step 400
400
#F96E6A
oklch(70.7% 0.171 24.1)
-
Step 500
500
#F13941
oklch(63% 0.219 24.2)
-
Step 600
600
#D80027
oklch(55.6% 0.225 24.2)
-
Step 700
700
#B70020
oklch(49.1% 0.199 24)
-
Step 800
800
#970018
oklch(42.6% 0.173 24.2)
-
Step 900
900
#7C0C17
oklch(37.6% 0.143 24)
-
Step 950
950 (this color)
#551818
oklch(30.9% 0.091 24.1)
#551818 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) | #282517 | 0.098 |
| Deuteranopia (no green cones) | #383216 | 0.089 |
| Tritanopia (no blue cones) | #5E0919 | 0.027 |
| Achromatopsia (no color) | #2D2D2D | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #551818
#551818
oklch(30.9% 0.091 24.1)
- #00383C
#00383C
oklch(31% 0.053 202.6)
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 #551818, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Burgundy #610023 ΔE 0.045
- Claret #680018 ΔE 0.046
- Mahogany #4A0100 ΔE 0.054
- Chocolate Brown #411900 ΔE 0.056
- Reddy Brown #6E1005 ΔE 0.056
- Deep Brown #410200 ΔE 0.072
- Blood #770001 ΔE 0.075
- Dark Brown #341C02 ΔE 0.082
Use #551818 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.