#AB1637
Closest named color: Rouge (#AB1239). oklch(47.9% 0.179 16.9), rgb(171, 22, 55).
Aa
White text reads best on this color (7.23:1).
About this color
#AB1637 is a medium-dark, vivid red. In OKLCH its lightness is 48%, its chroma 0.179 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Rouge (#AB1239), ΔE 0.005 away. White text reads best on it, at 7.23:1.
| Hue family | Reds |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.179) |
| Temperature | warm |
| Nearest name | Rouge (#AB1239) |
| Black text | 2.90:1 |
| White text | 7.23:1 |
Values
| HEX | #AB1637 |
| RGB | rgb(171, 22, 55) |
| HSL | hsl(347, 77%, 38%) |
| OKLCH | oklch(47.9% 0.179 16.9) |
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 #AB1637 | 7.23:1 | AAA | Lc -88.3 | Fine for body text |
| Black text on #AB1637 | 2.90:1 | Fails | Lc 20.8 | Dividers and decoration only |
| #AB1637 text on white | 7.23:1 | AAA | Lc 83.3 | Fine for body text |
| #AB1637 text on black | 2.90:1 | Fails | Lc -18.7 | 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 700.
-
Step 50
50
#FDF2F3
oklch(97% 0.012 11)
-
Step 100
100
#FAE4E4
oklch(93.7% 0.024 17.6)
-
Step 200
200
#F8CDCE
oklch(88.6% 0.049 16.5)
-
Step 300
300
#F4AAAD
oklch(81% 0.087 16.5)
-
Step 400
400
#EA7981
oklch(70.6% 0.139 16.9)
-
Step 500
500
#E05162
oklch(63.1% 0.178 16.9)
-
Step 600
600
#CB2D49
oklch(55.6% 0.192 16.9)
-
Step 700
700 (this color)
#AB1637
oklch(47.9% 0.179 16.9)
-
Step 800
800
#8E1C30
oklch(42.7% 0.148 17.1)
-
Step 900
900
#721F2B
oklch(37.6% 0.116 16.5)
-
Step 950
950
#431419
oklch(26.9% 0.073 17.1)
#AB1637 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) | #474337 | 0.200 |
| Deuteranopia (no green cones) | #6B6233 | 0.183 |
| Tritanopia (no blue cones) | #BC0026 | 0.038 |
| Achromatopsia (no color) | #575757 | 0.181 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AB1637
#AB1637
oklch(47.9% 0.179 16.9)
- #006B6D
#006B6D
oklch(47.9% 0.081 197)
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 #AB1637, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rouge #AB1239 ΔE 0.005
- Raspberry #B00149 ΔE 0.032
- Brown #A52A2A ΔE 0.032
- Firebrick #B22222 ΔE 0.036
- Cranberry #9E003A ΔE 0.037
- Rose Red #BE013C ΔE 0.039
- Auburn #9B2226 ΔE 0.040
- Rufous #AE2012 ΔE 0.042
Use #AB1637 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.