#64103B
Closest named color: Merlot (#730039). oklch(34% 0.122 355.1), rgb(100, 16, 59).
Aa
White text reads best on this color (12.50:1).
About this color
#64103B is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.122 and its hue 355°. Its hue sits on the warm side of the wheel. The nearest named color is Merlot (#730039), ΔE 0.033 away. White text reads best on it, at 12.50:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.122) |
| Temperature | warm |
| Nearest name | Merlot (#730039) |
| Black text | 1.67:1 |
| White text | 12.50:1 |
Values
| HEX | #64103B |
| RGB | rgb(100, 16, 59) |
| HSL | hsl(329, 72%, 23%) |
| OKLCH | oklch(34% 0.122 355.1) |
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 #64103B | 12.50:1 | AAA | Lc -100.8 | Preferred for body text |
| Black text on #64103B | 1.67:1 | Fails | Lc 0.0 | Not readable |
| #64103B text on white | 12.50:1 | AAA | Lc 97.2 | Preferred for body text |
| #64103B text on black | 1.67:1 | 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
#FDF2F6
oklch(97.1% 0.013 353.1)
-
Step 100
100
#F9E3EB
oklch(93.6% 0.026 353.5)
-
Step 200
200
#F6CCDB
oklch(88.5% 0.051 354.7)
-
Step 300
300
#F1A8C3
oklch(80.9% 0.092 355.5)
-
Step 400
400
#E676A5
oklch(70.7% 0.147 355)
-
Step 500
500
#DB4D8F
oklch(63.1% 0.187 355.1)
-
Step 600
600
#C62679
oklch(55.6% 0.204 355.1)
-
Step 700
700
#AB1566
oklch(49.2% 0.19 355.1)
-
Step 800
800
#8B1753
oklch(42.8% 0.158 355.2)
-
Step 900
900 (this color)
#64103B
oklch(34% 0.122 355.1)
-
Step 950
950
#421228
oklch(27% 0.078 355.3)
#64103B 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) | #222A3C | 0.138 |
| Deuteranopia (no green cones) | #393939 | 0.123 |
| Tritanopia (no blue cones) | #6D0424 | 0.042 |
| Achromatopsia (no color) | #343434 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64103B
#64103B
oklch(34% 0.122 355.1)
- #004236
#004236
oklch(33.9% 0.064 175.6)
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 #64103B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Merlot #730039 ΔE 0.033
- Burgundy #610023 ΔE 0.040
- Grape Purple #5D1451 ΔE 0.042
- Velvet #750851 ΔE 0.052
- Claret #680018 ΔE 0.054
- Bordeaux #7B002C ΔE 0.056
- Rich Purple #720058 ΔE 0.060
- Wine #80013F ΔE 0.061
Use #64103B 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.