#D21728
Closest named color: Cherry (#CF0234). oklch(55.1% 0.214 25), rgb(210, 23, 40).
Aa
White text reads best on this color (5.39:1).
About this color
#D21728 is a medium-dark, vivid red. In OKLCH its lightness is 55%, its chroma 0.214 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Cherry (#CF0234), ΔE 0.020 away. White text reads best on it, at 5.39:1.
| Hue family | Reds |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.214) |
| Temperature | warm |
| Nearest name | Cherry (#CF0234) |
| Black text | 3.89:1 |
| White text | 5.39:1 |
Values
| HEX | #D21728 |
| RGB | rgb(210, 23, 40) |
| HSL | hsl(355, 80%, 46%) |
| OKLCH | oklch(55.1% 0.214 25) |
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 #D21728 | 5.39:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #D21728 | 3.89:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #D21728 text on white | 5.39:1 | AA | Lc 74.7 | Content text, not long reading |
| #D21728 text on black | 3.89:1 | AA large text | Lc -27.1 | Dividers and decoration only |
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 600.
-
Step 50
50
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FCE3E1
oklch(93.6% 0.028 23.2)
-
Step 200
200
#FBCCC8
oklch(88.5% 0.054 23.9)
-
Step 300
300
#F9A8A1
oklch(80.9% 0.097 24.9)
-
Step 400
400
#F1756F
oklch(70.6% 0.154 24.6)
-
Step 500
500
#E84948
oklch(63.1% 0.196 25)
-
Step 600
600 (this color)
#D21728
oklch(55.1% 0.214 25)
-
Step 700
700
#B7011C
oklch(49.1% 0.199 25.1)
-
Step 800
800
#940E1A
oklch(42.6% 0.164 24.8)
-
Step 900
900
#77191B
oklch(37.6% 0.128 25)
-
Step 950
950
#461111
oklch(26.9% 0.081 24.4)
#D21728 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) | #5A5126 | 0.236 |
| Deuteranopia (no green cones) | #86781E | 0.214 |
| Tritanopia (no blue cones) | #E80021 | 0.043 |
| Achromatopsia (no color) | #6A6A6A | 0.215 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D21728
#D21728
oklch(55.1% 0.214 25)
- #00818C
#00818C
oklch(55.1% 0.094 205.3)
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 #D21728, closest first.
No curated palette has a color within ΔE 0.04 of #D21728.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cherry #CF0234 ΔE 0.020
- Crimson #DC143C ΔE 0.029
- Lipstick #D5174E ΔE 0.044
- Lipstick Red #C0022F ΔE 0.044
- Ruby #CA0147 ΔE 0.046
- Scarlet #BE0119 ΔE 0.047
- Dull Red #BB3F3F ΔE 0.054
- Rose Red #BE013C ΔE 0.054
Use #D21728 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.