#910F03
Closest named color: Brick Red (#8F1402). oklch(41.9% 0.163 30.4), rgb(145, 15, 3).
Aa
White text reads best on this color (9.23:1).
About this color
#910F03 is a dark, vivid red. In OKLCH its lightness is 42%, its chroma 0.163 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Red (#8F1402), ΔE 0.005 away. White text reads best on it, at 9.23:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | vivid (0.163) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.27:1 |
| White text | 9.23:1 |
Values
| HEX | #910F03 |
| RGB | rgb(145, 15, 3) |
| HSL | hsl(5, 96%, 29%) |
| OKLCH | oklch(41.9% 0.163 30.4) |
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 #910F03 | 9.23:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #910F03 | 2.27:1 | Fails | Lc 14.7 | Not readable |
| #910F03 text on white | 9.23:1 | AAA | Lc 89.3 | Fine for body text |
| #910F03 text on black | 2.27:1 | Fails | Lc -12.9 | 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
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FCE4DF
oklch(93.7% 0.027 31.7)
-
Step 200
200
#FACDC5
oklch(88.5% 0.052 29.9)
-
Step 300
300
#F8AA9C
oklch(81% 0.095 30.5)
-
Step 400
400
#F07865
oklch(70.7% 0.152 30.5)
-
Step 500
500
#E74C39
oklch(63% 0.195 30.3)
-
Step 600
600
#D3210F
oklch(55.6% 0.212 30.3)
-
Step 700
700
#B51000
oklch(49% 0.195 30.4)
-
Step 800
800 (this color)
#910F03
oklch(41.9% 0.163 30.4)
-
Step 900
900
#771C11
oklch(37.8% 0.127 30.6)
-
Step 950
950
#46120C
oklch(27% 0.081 29.8)
#910F03 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) | #3E3600 | 0.177 |
| Deuteranopia (no green cones) | #5C5100 | 0.158 |
| Tritanopia (no blue cones) | #A1000F | 0.035 |
| Achromatopsia (no color) | #474747 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #910F03
#910F03
oklch(41.9% 0.163 30.4)
- #005763
#005763
oklch(41.9% 0.073 210.8)
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 #910F03, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.005
- Blood Red #980002 ΔE 0.015
- Deep Red #9A0200 ΔE 0.019
- Dark Red #8B0000 ΔE 0.019
- Carmine #9D0216 ΔE 0.029
- Brown Red #922B05 ΔE 0.036
- Red Brown #8B2E16 ΔE 0.038
- Auburn #9B2226 ΔE 0.040
Use #910F03 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.