#D9001B
Closest named color: Crimson (#DC143C). oklch(55.7% 0.227 26.5), rgb(217, 0, 27).
Aa
White text reads best on this color (5.29:1).
About this color
#D9001B is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.227 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.029 away. White text reads best on it, at 5.29:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.227) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #D9001B |
| RGB | rgb(217, 0, 27) |
| HSL | hsl(353, 100%, 43%) |
| OKLCH | oklch(55.7% 0.227 26.5) |
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 #D9001B | 5.29:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #D9001B | 3.96:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #D9001B text on white | 5.29:1 | AA | Lc 73.4 | Content text, not long reading |
| #D9001B text on black | 3.96:1 | AA large text | Lc -28.3 | 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
#FFF2F1
oklch(97.1% 0.014 22.8)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FDCCC5
oklch(88.6% 0.057 27.7)
-
Step 300
300
#FCA79E
oklch(80.9% 0.102 26.2)
-
Step 400
400
#F57268
oklch(70.6% 0.163 26.4)
-
Step 500
500
#ED423E
oklch(63.1% 0.208 26.6)
-
Step 600
600 (this color)
#D9001B
oklch(55.7% 0.227 26.5)
-
Step 700
700
#B70015
oklch(49% 0.2 26.4)
-
Step 800
800
#98000F
oklch(42.8% 0.174 26.5)
-
Step 900
900
#7A1415
oklch(37.7% 0.136 26.4)
-
Step 950
950
#480F0E
oklch(27% 0.086 25.9)
#D9001B 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) | #5A5017 | 0.251 |
| Deuteranopia (no green cones) | #8A7A08 | 0.225 |
| Tritanopia (no blue cones) | #F00013 | 0.048 |
| Achromatopsia (no color) | #6B6B6B | 0.229 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D9001B
#D9001B
oklch(55.7% 0.227 26.5)
- #00838F
#00838F
oklch(55.7% 0.095 206.1)
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 #D9001B, closest first.
No curated palette has a color within ΔE 0.04 of #D9001B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.029
- Cherry #CF0234 ΔE 0.030
- Lipstick #D5174E ΔE 0.051
- Lipstick Red #C0022F ΔE 0.055
- Ruby #CA0147 ΔE 0.056
- Tomato Red #EC2D01 ΔE 0.057
- Scarlet #BE0119 ΔE 0.057
- Red Pantone #EF233C ΔE 0.057
Use #D9001B 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.