#DE1F21
Closest named color: Crimson (#DC143C). oklch(57.7% 0.221 27.5), rgb(222, 31, 33).
Aa
White text reads best on this color (4.85:1).
About this color
#DE1F21 is a medium-dark, vivid red. In OKLCH its lightness is 58%, its chroma 0.221 and its hue 28°. 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 4.85:1.
| Hue family | Reds |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.221) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.32:1 |
| White text | 4.85:1 |
Values
| HEX | #DE1F21 |
| RGB | rgb(222, 31, 33) |
| HSL | hsl(359, 75%, 50%) |
| OKLCH | oklch(57.7% 0.221 27.5) |
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 #DE1F21 | 4.85:1 | AA | Lc -77.0 | Fine for body text |
| Black text on #DE1F21 | 4.32:1 | AA large text | Lc 32.5 | Non-text elements, placeholder text |
| #DE1F21 text on white | 4.85:1 | AA | Lc 71.5 | Content text, not long reading |
| #DE1F21 text on black | 4.32:1 | AA large text | Lc -30.1 | Non-text elements, placeholder text |
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
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC5
oklch(88.5% 0.056 27.9)
-
Step 300
300
#FAA89D
oklch(80.9% 0.099 27.8)
-
Step 400
400
#F47468
oklch(70.8% 0.16 27.3)
-
Step 500
500
#EB463D
oklch(63.1% 0.203 27.7)
-
Step 600
600 (this color)
#DE1F21
oklch(57.7% 0.221 27.5)
-
Step 700
700
#B7000F
oklch(49% 0.2 27.4)
-
Step 800
800
#96070E
oklch(42.6% 0.17 27.4)
-
Step 900
900
#791714
oklch(37.8% 0.133 27.6)
-
Step 950
950
#47100D
oklch(26.9% 0.084 27.4)
#DE1F21 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) | #62571D | 0.242 |
| Deuteranopia (no green cones) | #8F8013 | 0.219 |
| Tritanopia (no blue cones) | #F50024 | 0.044 |
| Achromatopsia (no color) | #717171 | 0.223 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #DE1F21
#DE1F21
oklch(57.7% 0.221 27.5)
- #008997
#008997
oklch(57.6% 0.099 207.4)
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 #DE1F21, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.029
- Tomato Red #EC2D01 ΔE 0.038
- Red Pantone #EF233C ΔE 0.042
- Imperial Red #E63946 ΔE 0.043
- Cherry #CF0234 ΔE 0.045
- Cherry Red #F7022A ΔE 0.049
- Vermillion #F4320C ΔE 0.054
- Lipstick #D5174E ΔE 0.055
Use #DE1F21 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.