#D91721
Closest named color: Crimson (#DC143C). oklch(56.4% 0.22 26.7), rgb(217, 23, 33).
Aa
White text reads best on this color (5.12:1).
About this color
#D91721 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.220 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.027 away. White text reads best on it, at 5.12:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.220) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.09:1 |
| White text | 5.12:1 |
Values
| HEX | #D91721 |
| RGB | rgb(217, 23, 33) |
| HSL | hsl(357, 81%, 47%) |
| OKLCH | oklch(56.4% 0.22 26.7) |
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 #D91721 | 5.12:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #D91721 | 4.09:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #D91721 text on white | 5.12:1 | AA | Lc 73.1 | Content text, not long reading |
| #D91721 text on black | 4.09:1 | AA large text | Lc -28.6 | 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
#FDE3E0
oklch(93.6% 0.029 25.6)
-
Step 200
200
#FCCCC6
oklch(88.5% 0.055 26.5)
-
Step 300
300
#FAA89E
oklch(80.9% 0.099 27.1)
-
Step 400
400
#F3746A
oklch(70.6% 0.158 26.4)
-
Step 500
500
#EB4640
oklch(63.2% 0.203 26.8)
-
Step 600
600 (this color)
#D91721
oklch(56.4% 0.22 26.7)
-
Step 700
700
#B70014
oklch(49% 0.2 26.6)
-
Step 800
800
#960811
oklch(42.7% 0.169 26.8)
-
Step 900
900
#791716
oklch(37.8% 0.133 26.8)
-
Step 950
950
#47100E
oklch(26.9% 0.084 26.6)
#D91721 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) | #5E541E | 0.241 |
| Deuteranopia (no green cones) | #8B7C14 | 0.219 |
| Tritanopia (no blue cones) | #F0001F | 0.045 |
| Achromatopsia (no color) | #6E6E6E | 0.222 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D91721
#D91721
oklch(56.4% 0.22 26.7)
- #008592
#008592
oklch(56.4% 0.097 206.8)
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 #D91721, closest first.
No curated palette has a color within ΔE 0.04 of #D91721.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.027
- Cherry #CF0234 ΔE 0.033
- Lipstick #D5174E ΔE 0.049
- Tomato Red #EC2D01 ΔE 0.051
- Red Pantone #EF233C ΔE 0.052
- Imperial Red #E63946 ΔE 0.053
- Ruby #CA0147 ΔE 0.058
- Lipstick Red #C0022F ΔE 0.059
Use #D91721 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.