#CF3138
Closest named color: Crimson (#DC143C). oklch(56.4% 0.194 24), rgb(207, 49, 56).
Aa
White text reads best on this color (5.06:1).
About this color
#CF3138 is a medium-dark, vivid red. In OKLCH its lightness is 56%, its chroma 0.194 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Crimson (#DC143C), ΔE 0.032 away. White text reads best on it, at 5.06:1.
| Hue family | Reds |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.194) |
| Temperature | warm |
| Nearest name | Crimson (#DC143C) |
| Black text | 4.14:1 |
| White text | 5.06:1 |
Values
| HEX | #CF3138 |
| RGB | rgb(207, 49, 56) |
| HSL | hsl(357, 62%, 50%) |
| OKLCH | oklch(56.4% 0.194 24) |
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 #CF3138 | 5.06:1 | AA | Lc -78.9 | Fine for body text |
| Black text on #CF3138 | 4.14:1 | AA large text | Lc 30.6 | Non-text elements, placeholder text |
| #CF3138 text on white | 5.06:1 | AA | Lc 73.5 | Content text, not long reading |
| #CF3138 text on black | 4.14:1 | AA large text | Lc -28.2 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FBE4E2
oklch(93.7% 0.025 23.6)
-
Step 200
200
#F8CDCA
oklch(88.4% 0.049 22.8)
-
Step 300
300
#F4ABA5
oklch(80.9% 0.087 24.4)
-
Step 400
400
#EB7A75
oklch(70.7% 0.14 23.9)
-
Step 500
500
#E15252
oklch(63.1% 0.179 23.8)
-
Step 600
600 (this color)
#CF3138
oklch(56.4% 0.194 24)
-
Step 700
700
#B01D28
oklch(49% 0.18 24)
-
Step 800
800
#8F1D23
oklch(42.7% 0.149 23.9)
-
Step 900
900
#732021
oklch(37.7% 0.116 24)
-
Step 950
950
#441414
oklch(27% 0.074 23.5)
#CF3138 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) | #615937 | 0.211 |
| Deuteranopia (no green cones) | #887B32 | 0.194 |
| Tritanopia (no blue cones) | #E40035 | 0.044 |
| Achromatopsia (no color) | #6F6F6F | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #CF3138
#CF3138
oklch(56.4% 0.194 24)
- #00858F
#00858F
oklch(56.2% 0.096 204.1)
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 #CF3138, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Crimson #DC143C ΔE 0.032
- Cherry #CF0234 ΔE 0.035
- Dull Red #BB3F3F ΔE 0.039
- Faded Red #D3494E ΔE 0.040
- Lipstick #D5174E ΔE 0.042
- Dusty Red #B9484E ΔE 0.050
- Ruby #CA0147 ΔE 0.051
- Imperial Red #E63946 ΔE 0.051
Use #CF3138 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.