#651B37
Closest named color: Merlot (#730039). oklch(35.1% 0.109 1.4), rgb(101, 27, 55).
Aa
White text reads best on this color (11.89:1).
About this color
#651B37 is a dark, moderately saturated red. In OKLCH its lightness is 35%, its chroma 0.109 and its hue 1°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.038 away. White text reads best on it, at 11.89:1.
| Hue family | Reds |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.109) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.76:1 |
| White text | 11.89:1 |
Values
| HEX | #651B37 |
| RGB | rgb(101, 27, 55) |
| HSL | hsl(337, 58%, 25%) |
| OKLCH | oklch(35.1% 0.109 1.4) |
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 #651B37 | 11.89:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #651B37 | 1.76:1 | Fails | Lc 7.5 | Not readable |
| #651B37 text on white | 11.89:1 | AAA | Lc 96.4 | Preferred for body text |
| #651B37 text on black | 1.76:1 | 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 900.
-
Step 50
50
#FCF3F5
oklch(97.2% 0.01 2)
-
Step 100
100
#F8E4E9
oklch(93.6% 0.023 0.5)
-
Step 200
200
#F4CDD7
oklch(88.4% 0.046 0.9)
-
Step 300
300
#EEABBD
oklch(80.9% 0.082 1.4)
-
Step 400
400
#E27C9B
oklch(70.7% 0.13 1.5)
-
Step 500
500
#D65683
oklch(63.1% 0.166 1.2)
-
Step 600
600
#C2356C
oklch(55.6% 0.182 1.5)
-
Step 700
700
#A7265A
oklch(49.1% 0.169 1.6)
-
Step 800
800
#87224A
oklch(42.6% 0.139 1.1)
-
Step 900
900 (this color)
#651B37
oklch(35.1% 0.109 1.4)
-
Step 950
950
#401524
oklch(26.9% 0.069 1.1)
#651B37 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) | #2A2E38 | 0.122 |
| Deuteranopia (no green cones) | #3E3C35 | 0.110 |
| Tritanopia (no blue cones) | #6E1126 | 0.032 |
| Achromatopsia (no color) | #373737 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #651B37
#651B37
oklch(35.1% 0.109 1.4)
- #00453D
#00453D
oklch(35% 0.063 182)
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 #651B37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.038
- Burgundy #610023 ΔE 0.044
- Claret #680018 ΔE 0.049
- Bordeaux #7B002C ΔE 0.050
- Wine Red #7B0323 ΔE 0.055
- Grape Purple #5D1451 ΔE 0.056
- Wine #80013F ΔE 0.060
- Velvet #750851 ΔE 0.061
Use #651B37 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.