#D82101
Closest named color: Crimson (#DC143C). oklch(56.5% 0.217 31.4), rgb(216, 33, 1).
Aa
White text reads best on this color (5.07:1).
About this color
#D82101 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.217 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.044 away. White text reads best on it, at 5.07:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.217) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #D82101 |
| RGB | rgb(216, 33, 1) |
| HSL | hsl(9, 99%, 43%) |
| OKLCH | oklch(56.5% 0.217 31.4) |
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 #D82101 | 5.07:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #D82101 | 4.13:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #D82101 text on white | 5.07:1 | AA | Lc 72.9 | Content text, not long reading |
| #D82101 text on black | 4.13:1 | AA large text | Lc -28.8 | 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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FCE3DE
oklch(93.5% 0.028 31.1)
-
Step 200
200
#FBCDC3
oklch(88.5% 0.054 32.4)
-
Step 300
300
#F9A99A
oklch(80.9% 0.098 31)
-
Step 400
400
#F27661
oklch(70.6% 0.157 31.2)
-
Step 500
500
#E94A32
oklch(63.1% 0.199 31.5)
-
Step 600
600 (this color)
#D82101
oklch(56.5% 0.217 31.4)
-
Step 700
700
#B31900
oklch(49.1% 0.189 31.4)
-
Step 800
800
#941300
oklch(42.7% 0.164 31.5)
-
Step 900
900
#781A0C
oklch(37.8% 0.131 31.5)
-
Step 950
950
#47120A
oklch(27.1% 0.083 31.4)
#D82101 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) | #615500 | 0.234 |
| Deuteranopia (no green cones) | #8D7C00 | 0.207 |
| Tritanopia (no blue cones) | #EF001F | 0.048 |
| Achromatopsia (no color) | #6E6E6E | 0.219 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #D82101
#D82101
oklch(56.5% 0.217 31.4)
- #008597
#008597
oklch(56.6% 0.098 211.3)
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 #D82101, closest first.
No curated palette has a color within ΔE 0.04 of #D82101.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.044
- Tomato Red #EC2D01 ΔE 0.045
- Cherry #CF0234 ΔE 0.048
- Imperial Red #E63946 ΔE 0.059
- Sinopia #BB3E03 ΔE 0.060
- Red Pantone #EF233C ΔE 0.060
- Deep Orange #DC4D01 ΔE 0.061
- Brick Orange #C14A09 ΔE 0.062
Use #D82101 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.