#C31744
Closest named color: Ruby (#CA0147). oklch(52.7% 0.2 15), rgb(195, 23, 68).
Aa
White text reads best on this color (5.95:1).
About this color
#C31744 is a medium-dark, vivid red. In OKLCH its lightness is 53%, its chroma 0.200 and its hue 15°. Its hue sits on the warm side of the wheel. The nearest named color is Ruby (#CA0147), ΔE 0.016 away. White text reads best on it, at 5.95:1.
| Hue family | Reds |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.200) |
| Temperature | warm |
| Nearest name | Ruby (#CA0147) |
| Black text | 3.52:1 |
| White text | 5.95:1 |
Values
| HEX | #C31744 |
| RGB | rgb(195, 23, 68) |
| HSL | hsl(344, 79%, 43%) |
| OKLCH | oklch(52.7% 0.2 15) |
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 #C31744 | 5.95:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #C31744 | 3.52:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #C31744 text on white | 5.95:1 | AA | Lc 77.8 | Fine for body text |
| #C31744 text on black | 3.52:1 | AA large text | Lc -24.0 | 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
#FDF2F3
oklch(97% 0.012 11)
-
Step 100
100
#FBE3E4
oklch(93.6% 0.026 14.7)
-
Step 200
200
#F8CCCE
oklch(88.4% 0.05 15.1)
-
Step 300
300
#F5A9AE
oklch(80.9% 0.09 14.9)
-
Step 400
400
#EC7783
oklch(70.7% 0.144 15.1)
-
Step 500
500
#E24D65
oklch(63.1% 0.184 14.8)
-
Step 600
600 (this color)
#C31744
oklch(52.7% 0.2 15)
-
Step 700
700
#B1143D
oklch(49.1% 0.186 15)
-
Step 800
800
#901733
oklch(42.7% 0.154 14.8)
-
Step 900
900
#741D2C
oklch(37.8% 0.12 15.4)
-
Step 950
950
#44131A
oklch(27% 0.075 15.3)
#C31744 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) | #504D44 | 0.224 |
| Deuteranopia (no green cones) | #7A703F | 0.204 |
| Tritanopia (no blue cones) | #D6002D | 0.045 |
| Achromatopsia (no color) | #646464 | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #C31744
#C31744
oklch(52.7% 0.2 15)
- #007B7B
#007B7B
oklch(52.8% 0.09 194.8)
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 #C31744, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ruby #CA0147 ΔE 0.016
- Rose Red #BE013C ΔE 0.019
- Lipstick Red #C0022F ΔE 0.026
- Cherry #CF0234 ΔE 0.029
- Lipstick #D5174E ΔE 0.039
- Scarlet #BE0119 ΔE 0.045
- Raspberry #B00149 ΔE 0.048
- Dull Red #BB3F3F ΔE 0.052
Use #C31744 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.