#DE170D
Closest named color: Crimson (#DC143C). oklch(57.2% 0.226 29.4), rgb(222, 23, 13).
Aa
White text reads best on this color (4.95:1).
About this color
#DE170D is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.226 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.037 away. White text reads best on it, at 4.95:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.226) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.23:1 |
| White text | 4.95:1 |
Values
| HEX | #DE170D |
| RGB | rgb(222, 23, 13) |
| HSL | hsl(3, 89%, 46%) |
| OKLCH | oklch(57.2% 0.226 29.4) |
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 #DE170D | 4.95:1 | AA | Lc -77.4 | Fine for body text |
| Black text on #DE170D | 4.23:1 | AA large text | Lc 32.1 | Non-text elements, placeholder text |
| #DE170D text on white | 4.95:1 | AA | Lc 71.9 | Content text, not long reading |
| #DE170D text on black | 4.23:1 | AA large text | Lc -29.7 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FCCCC4
oklch(88.5% 0.056 29.2)
-
Step 300
300
#FBA89A
oklch(80.9% 0.101 30)
-
Step 400
400
#F57362
oklch(70.6% 0.163 29.4)
-
Step 500
500
#ED4434
oklch(63.2% 0.208 29.5)
-
Step 600
600 (this color)
#DE170D
oklch(57.2% 0.226 29.4)
-
Step 700
700
#B70300
oklch(49% 0.2 29.4)
-
Step 800
800
#980300
oklch(42.8% 0.174 29.5)
-
Step 900
900
#7A160E
oklch(37.8% 0.136 29.5)
-
Step 950
950
#48100A
oklch(27.1% 0.086 29.8)
#DE170D 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) | #615503 | 0.247 |
| Deuteranopia (no green cones) | #8F7F00 | 0.220 |
| Tritanopia (no blue cones) | #F5001A | 0.046 |
| Achromatopsia (no color) | #707070 | 0.227 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #DE170D
#DE170D
oklch(57.2% 0.226 29.4)
- #008797
#008797
oklch(57.1% 0.099 209.3)
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 #DE170D, closest first.
No curated palette has a color within ΔE 0.04 of #DE170D.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.037
- Tomato Red #EC2D01 ΔE 0.039
- Cherry #CF0234 ΔE 0.048
- Red Pantone #EF233C ΔE 0.049
- Imperial Red #E63946 ΔE 0.052
- Cherry Red #F7022A ΔE 0.052
- Vermillion #F4320C ΔE 0.056
- Lipstick #D5174E ΔE 0.062
Use #DE170D 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.