#9F0100
Closest named color: Deep Red (#9A0200). oklch(44.1% 0.181 29.3), rgb(159, 1, 0).
Aa
White text reads best on this color (8.47:1).
About this color
#9F0100 is a dark, vivid red. In OKLCH its lightness is 44%, its chroma 0.181 and its hue 29°. Its hue sits on the warm side of the wheel. The nearest named color is Deep Red (#9A0200), ΔE 0.011 away. White text reads best on it, at 8.47:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | vivid (0.181) |
| Temperature | warm |
| Nearest name | Deep Red (#9A0200) |
| Black text | 2.47:1 |
| White text | 8.47:1 |
Values
| HEX | #9F0100 |
| RGB | rgb(159, 1, 0) |
| HSL | hsl(0, 100%, 31%) |
| OKLCH | oklch(44.1% 0.181 29.3) |
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 #9F0100 | 8.47:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #9F0100 | 2.47:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #9F0100 text on white | 8.47:1 | AAA | Lc 86.6 | Fine for body text |
| #9F0100 text on black | 2.47:1 | Fails | Lc -15.5 | 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
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FEE3DE
oklch(93.6% 0.031 30.2)
-
Step 200
200
#FECBC3
oklch(88.5% 0.059 28.6)
-
Step 300
300
#FDA699
oklch(80.8% 0.106 28.9)
-
Step 400
400
#F87160
oklch(70.8% 0.169 29.2)
-
Step 500
500
#F03E30
oklch(63.1% 0.216 29.2)
-
Step 600
600
#D90200
oklch(55.6% 0.228 29.3)
-
Step 700
700
#B80100
oklch(49.2% 0.201 29.3)
-
Step 800
800 (this color)
#9F0100
oklch(44.1% 0.181 29.3)
-
Step 900
900
#7B110B
oklch(37.6% 0.14 29.2)
-
Step 950
950
#490E09
oklch(27% 0.09 29.2)
#9F0100 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) | #413800 | 0.198 |
| Deuteranopia (no green cones) | #645800 | 0.175 |
| Tritanopia (no blue cones) | #B00006 | 0.037 |
| Achromatopsia (no color) | #4D4D4D | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #9F0100
#9F0100
oklch(44.1% 0.181 29.3)
- #005E6A
#005E6A
oklch(44.1% 0.076 209.8)
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 #9F0100, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Red #9A0200 ΔE 0.011
- Carmine #9D0216 ΔE 0.013
- Blood Red #980002 ΔE 0.016
- Burnt Red #9F2305 ΔE 0.028
- Auburn #9B2226 ΔE 0.031
- Brick Red #8F1402 ΔE 0.033
- Brown Red #922B05 ΔE 0.042
- Dark Red #8B0000 ΔE 0.045
Use #9F0100 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.