#991B30
Closest named color: Auburn (#9B2226). oklch(44.7% 0.16 18.4), rgb(153, 27, 48).
Aa
White text reads best on this color (8.22:1).
About this color
#991B30 is a dark, vivid red. In OKLCH its lightness is 45%, its chroma 0.160 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Auburn (#9B2226), ΔE 0.019 away. White text reads best on it, at 8.22:1.
| Hue family | Reds |
| Lightness | dark (45%) |
| Chroma | vivid (0.160) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.55:1 |
| White text | 8.22:1 |
Values
| HEX | #991B30 |
| RGB | rgb(153, 27, 48) |
| HSL | hsl(350, 70%, 35%) |
| OKLCH | oklch(44.7% 0.16 18.4) |
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 #991B30 | 8.22:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #991B30 | 2.55:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #991B30 text on white | 8.22:1 | AAA | Lc 86.9 | Fine for body text |
| #991B30 text on black | 2.55:1 | Fails | Lc -15.2 | 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 800.
-
Step 50
50
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FCE3E3
oklch(93.6% 0.028 17.7)
-
Step 200
200
#FACCCC
oklch(88.5% 0.052 18.2)
-
Step 300
300
#F7A8A9
oklch(80.8% 0.094 18.5)
-
Step 400
400
#EF767C
oklch(70.8% 0.149 18.6)
-
Step 500
500
#E54A5B
oklch(63% 0.19 18.4)
-
Step 600
600
#D11F41
oklch(55.6% 0.207 18.5)
-
Step 700
700
#B40933
oklch(49.1% 0.193 18.4)
-
Step 800
800 (this color)
#991B30
oklch(44.7% 0.16 18.4)
-
Step 900
900
#761B27
oklch(37.8% 0.124 18.5)
-
Step 950
950
#451217
oklch(27% 0.078 18.5)
#991B30 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) | #423E30 | 0.176 |
| Deuteranopia (no green cones) | #61582C | 0.161 |
| Tritanopia (no blue cones) | #A80024 | 0.032 |
| Achromatopsia (no color) | #4F4F4F | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #991B30
#991B30
oklch(44.7% 0.16 18.4)
- #006164
#006164
oklch(44.7% 0.076 198.5)
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 #991B30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Auburn #9B2226 ΔE 0.019
- Cranberry #9E003A ΔE 0.028
- Carmine #9D0216 ΔE 0.028
- Rouge #AB1239 ΔE 0.039
- Deep Red #9A0200 ΔE 0.039
- Brown #A52A2A ΔE 0.039
- Blood Red #980002 ΔE 0.039
- Red Wine #8C0034 ΔE 0.044
Use #991B30 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.