#990900
Closest named color: Deep Red (#9A0200). oklch(43.2% 0.173 30.1), rgb(153, 9, 0).
Aa
White text reads best on this color (8.77:1).
About this color
#990900 is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.173 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Red (#9A0200), ΔE 0.004 away. White text reads best on it, at 8.77:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.173) |
| Temperature | warm |
| Nearest name | Deep Red (#9A0200) |
| Black text | 2.39:1 |
| White text | 8.77:1 |
Values
| HEX | #990900 |
| RGB | rgb(153, 9, 0) |
| HSL | hsl(4, 100%, 30%) |
| OKLCH | oklch(43.2% 0.173 30.1) |
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 #990900 | 8.77:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #990900 | 2.39:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #990900 text on white | 8.77:1 | AAA | Lc 87.8 | Fine for body text |
| #990900 text on black | 2.39:1 | Fails | Lc -14.3 | 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
#FDE3DE
oklch(93.6% 0.03 30.6)
-
Step 200
200
#FCCCC3
oklch(88.5% 0.056 30.5)
-
Step 300
300
#FBA89A
oklch(80.9% 0.101 30)
-
Step 400
400
#F47461
oklch(70.6% 0.161 30.2)
-
Step 500
500
#EC4533
oklch(63.1% 0.206 30)
-
Step 600
600
#D71100
oklch(55.6% 0.223 30.1)
-
Step 700
700
#B60D00
oklch(49.1% 0.196 30.1)
-
Step 800
800 (this color)
#990900
oklch(43.2% 0.173 30.1)
-
Step 900
900
#79170D
oklch(37.7% 0.134 30.2)
-
Step 950
950
#48100A
oklch(27.1% 0.086 29.8)
#990900 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) | #403700 | 0.188 |
| Deuteranopia (no green cones) | #615500 | 0.166 |
| Tritanopia (no blue cones) | #AA000B | 0.037 |
| Achromatopsia (no color) | #4B4B4B | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #990900
#990900
oklch(43.2% 0.173 30.1)
- #005B67
#005B67
oklch(43.2% 0.075 210.2)
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 #990900, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Red #9A0200 ΔE 0.004
- Blood Red #980002 ΔE 0.007
- Carmine #9D0216 ΔE 0.017
- Brick Red #8F1402 ΔE 0.021
- Burnt Red #9F2305 ΔE 0.031
- Auburn #9B2226 ΔE 0.032
- Dark Red #8B0000 ΔE 0.034
- Brown Red #922B05 ΔE 0.036
Use #990900 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.