#910104
Closest named color: Brick Red (#8F1402). oklch(41.3% 0.168 28.6), rgb(145, 1, 4).
Aa
White text reads best on this color (9.50:1).
About this color
#910104 is a dark, vivid red. In OKLCH its lightness is 41%, its chroma 0.168 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Red (#8F1402), ΔE 0.014 away. White text reads best on it, at 9.50:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | vivid (0.168) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.21:1 |
| White text | 9.50:1 |
Values
| HEX | #910104 |
| RGB | rgb(145, 1, 4) |
| HSL | hsl(359, 99%, 29%) |
| OKLCH | oklch(41.3% 0.168 28.6) |
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 #910104 | 9.50:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #910104 | 2.21:1 | Fails | Lc 14.5 | Not readable |
| #910104 text on white | 9.50:1 | AAA | Lc 89.5 | Fine for body text |
| #910104 text on black | 2.21:1 | Fails | Lc -12.7 | Not readable |
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
#FEF2F0
oklch(97% 0.013 28.9)
-
Step 100
100
#FDE3DF
oklch(93.6% 0.029 28.1)
-
Step 200
200
#FBCCC5
oklch(88.4% 0.054 28.1)
-
Step 300
300
#FAA89C
oklch(80.8% 0.099 28.6)
-
Step 400
400
#F37566
oklch(70.7% 0.158 28.6)
-
Step 500
500
#EA473B
oklch(63% 0.202 28.4)
-
Step 600
600
#D61614
oklch(55.7% 0.219 28.6)
-
Step 700
700
#B80006
oklch(49.2% 0.201 28.5)
-
Step 800
800 (this color)
#910104
oklch(41.3% 0.168 28.6)
-
Step 900
900
#781813
oklch(37.6% 0.131 28.3)
-
Step 950
950
#47110C
oklch(27% 0.083 29)
#910104 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) | #3B3301 | 0.185 |
| Deuteranopia (no green cones) | #5B5000 | 0.165 |
| Tritanopia (no blue cones) | #A10006 | 0.035 |
| Achromatopsia (no color) | #464646 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #910104
#910104
oklch(41.3% 0.168 28.6)
- #005560
#005560
oklch(41.2% 0.071 209.8)
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 #910104, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.014
- Dark Red #8B0000 ΔE 0.014
- Blood Red #980002 ΔE 0.015
- Deep Red #9A0200 ΔE 0.020
- Carmine #9D0216 ΔE 0.029
- Maroon #800000 ΔE 0.039
- Auburn #9B2226 ΔE 0.045
- Brown Red #922B05 ΔE 0.046
Use #910104 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.