#90313B
Closest named color: Auburn (#9B2226). oklch(45.5% 0.128 17.7), rgb(144, 49, 59).
Aa
White text reads best on this color (7.81:1).
About this color
#90313B is a medium-dark, moderately saturated red. In OKLCH its lightness is 45%, its chroma 0.128 and its hue 18°. Its hue sits on the warm side of the wheel. The nearest named color is Auburn (#9B2226), ΔE 0.033 away. White text reads best on it, at 7.81:1.
| Hue family | Reds |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.128) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.68:1 |
| White text | 7.81:1 |
Values
| HEX | #90313B |
| RGB | rgb(144, 49, 59) |
| HSL | hsl(354, 49%, 38%) |
| OKLCH | oklch(45.5% 0.128 17.7) |
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 #90313B | 7.81:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #90313B | 2.68:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #90313B text on white | 7.81:1 | AAA | Lc 86.3 | Fine for body text |
| #90313B text on black | 2.68:1 | Fails | Lc -15.8 | 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
#FCF3F3
oklch(97.1% 0.01 17.3)
-
Step 100
100
#F8E4E4
oklch(93.5% 0.022 17.6)
-
Step 200
200
#F4CFCF
oklch(88.6% 0.042 18)
-
Step 300
300
#EDAEAF
oklch(81% 0.074 17.8)
-
Step 400
400
#E18085
oklch(70.7% 0.12 17.3)
-
Step 500
500
#D65C66
oklch(63.1% 0.154 17.7)
-
Step 600
600
#C13E4E
oklch(55.6% 0.166 17.5)
-
Step 700
700
#A62F3E
oklch(49.1% 0.154 18)
-
Step 800
800 (this color)
#90313B
oklch(45.5% 0.128 17.7)
-
Step 900
900
#6D272D
oklch(37.8% 0.1 18.2)
-
Step 950
950
#40181B
oklch(27.1% 0.062 17.6)
#90313B 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) | #49463B | 0.139 |
| Deuteranopia (no green cones) | #615939 | 0.128 |
| Tritanopia (no blue cones) | #9E1E35 | 0.034 |
| Achromatopsia (no color) | #525252 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90313B
#90313B
oklch(45.5% 0.128 17.7)
- #006366
#006366
oklch(45.4% 0.077 198.4)
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 #90313B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Auburn #9B2226 ΔE 0.033
- Red Brown #8B2E16 ΔE 0.044
- Brown #A52A2A ΔE 0.045
- Brick #A03623 ΔE 0.048
- Brown Red #922B05 ΔE 0.050
- Cranberry #9E003A ΔE 0.053
- Burnt Red #9F2305 ΔE 0.054
- Carmine #9D0216 ΔE 0.055
Use #90313B 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.