#641721
Closest named color: Claret (#680018). oklch(33.9% 0.109 18.2), rgb(100, 23, 33).
Aa
White text reads best on this color (12.45:1).
About this color
#641721 is a dark, moderately saturated red. In OKLCH its lightness is 34%, its chroma 0.109 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.025 away. White text reads best on it, at 12.45:1.
| Hue family | Reds |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.109) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.68:1 |
| White text | 12.45:1 |
Values
| HEX | #641721 |
| RGB | rgb(100, 23, 33) |
| HSL | hsl(352, 63%, 24%) |
| OKLCH | oklch(33.9% 0.109 18.2) |
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 #641721 | 12.45:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #641721 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #641721 text on white | 12.45:1 | AAA | Lc 97.3 | Preferred for body text |
| #641721 text on black | 1.68:1 | 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
#FDF3F3
oklch(97.2% 0.011 17.3)
-
Step 100
100
#F9E4E4
oklch(93.6% 0.023 17.6)
-
Step 200
200
#F6CECE
oklch(88.6% 0.045 18)
-
Step 300
300
#F1ACAD
oklch(81% 0.081 18)
-
Step 400
400
#E67D81
oklch(70.7% 0.13 18.5)
-
Step 500
500
#DC5662
oklch(63.1% 0.168 18)
-
Step 600
600
#C73549
oklch(55.6% 0.182 18)
-
Step 700
700
#AB263A
oklch(49.1% 0.168 18.2)
-
Step 800
800
#8B2230
oklch(42.6% 0.14 18.3)
-
Step 900
900 (this color)
#641721
oklch(33.9% 0.109 18.2)
-
Step 950
950
#421619
oklch(27.1% 0.068 18.8)
#641721 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) | #2C2A21 | 0.120 |
| Deuteranopia (no green cones) | #403A1F | 0.110 |
| Tritanopia (no blue cones) | #6E011B | 0.027 |
| Achromatopsia (no color) | #343434 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #641721
#641721
oklch(33.9% 0.109 18.2)
- #004042
#004042
oklch(33.7% 0.057 198.3)
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 #641721, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.025
- Burgundy #610023 ΔE 0.034
- Reddy Brown #6E1005 ΔE 0.034
- Blood #770001 ΔE 0.048
- Wine Red #7B0323 ΔE 0.050
- Bordeaux #7B002C ΔE 0.054
- Merlot #730039 ΔE 0.057
- Maroon #800000 ΔE 0.065
Use #641721 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.