#991003
Closest named color: Deep Red (#9A0200). oklch(43.5% 0.17 30.4), rgb(153, 16, 3).
Aa
White text reads best on this color (8.64:1).
About this color
#991003 is a dark, vivid red. In OKLCH its lightness is 44%, its chroma 0.170 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Red (#9A0200), ΔE 0.008 away. White text reads best on it, at 8.64:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | vivid (0.170) |
| Temperature | warm |
| Nearest name | Deep Red (#9A0200) |
| Black text | 2.42:1 |
| White text | 8.64:1 |
Values
| HEX | #991003 |
| RGB | rgb(153, 16, 3) |
| HSL | hsl(5, 96%, 31%) |
| OKLCH | oklch(43.5% 0.17 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 #991003 | 8.64:1 | AAA | Lc -92.3 | Preferred for body text |
| Black text on #991003 | 2.42:1 | Fails | Lc 16.4 | Dividers and decoration only |
| #991003 text on white | 8.64:1 | AAA | Lc 87.6 | Fine for body text |
| #991003 text on black | 2.42:1 | Fails | Lc -14.5 | 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
#FCCCC4
oklch(88.5% 0.056 29.2)
-
Step 300
300
#FAA99A
oklch(81% 0.099 30.9)
-
Step 400
400
#F37562
oklch(70.7% 0.159 30.3)
-
Step 500
500
#EB4734
oklch(63.1% 0.204 30.2)
-
Step 600
600
#D61500
oklch(55.6% 0.221 30.4)
-
Step 700
700
#B51000
oklch(49% 0.195 30.4)
-
Step 800
800 (this color)
#991003
oklch(43.5% 0.17 30.4)
-
Step 900
900
#78180E
oklch(37.6% 0.132 30.2)
-
Step 950
950
#47110A
oklch(27% 0.084 30.6)
#991003 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) | #423900 | 0.184 |
| Deuteranopia (no green cones) | #625600 | 0.164 |
| Tritanopia (no blue cones) | #AA0010 | 0.036 |
| Achromatopsia (no color) | #4C4C4C | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #991003
#991003
oklch(43.5% 0.17 30.4)
- #005C68
#005C68
oklch(43.5% 0.075 210.1)
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 #991003, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Red #9A0200 ΔE 0.008
- Blood Red #980002 ΔE 0.011
- Carmine #9D0216 ΔE 0.017
- Brick Red #8F1402 ΔE 0.021
- Burnt Red #9F2305 ΔE 0.027
- Auburn #9B2226 ΔE 0.028
- Brown Red #922B05 ΔE 0.033
- Dark Red #8B0000 ΔE 0.036
Use #991003 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.