#DD172A
Closest named color: Crimson (#DC143C). oklch(57.2% 0.223 25), rgb(221, 23, 42).
Aa
White text reads best on this color (4.96:1).
About this color
#DD172A is a medium-dark, vivid red. In OKLCH its lightness is 57%, its chroma 0.223 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.019 away. White text reads best on it, at 4.96:1.
| Hue family | Reds |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.223) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.23:1 |
| White text | 4.96:1 |
Values
| HEX | #DD172A |
| RGB | rgb(221, 23, 42) |
| HSL | hsl(354, 81%, 48%) |
| OKLCH | oklch(57.2% 0.223 25) |
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 #DD172A | 4.96:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #DD172A | 4.23:1 | AA large text | Lc 32.0 | Non-text elements, placeholder text |
| #DD172A text on white | 4.96:1 | AA | Lc 72.1 | Content text, not long reading |
| #DD172A text on black | 4.23:1 | AA large text | Lc -29.6 | 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
#FCCCC7
oklch(88.6% 0.055 25.2)
-
Step 300
300
#FBA7A0
oklch(80.9% 0.101 24.8)
-
Step 400
400
#F4736C
oklch(70.7% 0.16 25.1)
-
Step 500
500
#EC4445
oklch(63.2% 0.205 25)
-
Step 600
600 (this color)
#DD172A
oklch(57.2% 0.223 25)
-
Step 700
700
#B7001C
oklch(49.1% 0.199 25)
-
Step 800
800
#970316
oklch(42.7% 0.172 25.1)
-
Step 900
900
#791619
oklch(37.7% 0.133 25.1)
-
Step 950
950
#471010
oklch(27% 0.084 24.7)
#DD172A 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) | #5F5528 | 0.245 |
| Deuteranopia (no green cones) | #8D7E20 | 0.222 |
| Tritanopia (no blue cones) | #F40022 | 0.045 |
| Achromatopsia (no color) | #707070 | 0.224 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #DD172A
#DD172A
oklch(57.2% 0.223 25)
- #008893
#008893
oklch(57.2% 0.098 204.8)
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 #DD172A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.019
- Cherry #CF0234 ΔE 0.036
- Red Pantone #EF233C ΔE 0.042
- Imperial Red #E63946 ΔE 0.044
- Lipstick #D5174E ΔE 0.045
- Tomato Red #EC2D01 ΔE 0.047
- Cherry Red #F7022A ΔE 0.051
- Faded Red #D3494E ΔE 0.056
Use #DD172A 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.