#821003
Closest named color: Maroon (#800000). oklch(38.9% 0.149 30.9), rgb(130, 16, 3).
Aa
White text reads best on this color (10.37:1).
About this color
#821003 is a dark, vivid red. In OKLCH its lightness is 39%, its chroma 0.149 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Maroon (#800000), ΔE 0.014 away. White text reads best on it, at 10.37:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | vivid (0.149) |
| Temperature | warm |
| Nearest name | Maroon (#800000) |
| Black text | 2.02:1 |
| White text | 10.37:1 |
Values
| HEX | #821003 |
| RGB | rgb(130, 16, 3) |
| HSL | hsl(6, 95%, 26%) |
| OKLCH | oklch(38.9% 0.149 30.9) |
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 #821003 | 10.37:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #821003 | 2.02:1 | Fails | Lc 11.7 | Not readable |
| #821003 text on white | 10.37:1 | AAA | Lc 92.3 | Preferred for body text |
| #821003 text on black | 2.02:1 | Fails | Lc -10.1 | 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 900.
-
Step 50
50
#FFF2F0
oklch(97.1% 0.014 28)
-
Step 100
100
#FFE3DD
oklch(93.7% 0.032 32.1)
-
Step 200
200
#FFCBC1
oklch(88.5% 0.061 30.9)
-
Step 300
300
#FFA696
oklch(80.9% 0.109 30.7)
-
Step 400
400
#FC6E58
oklch(70.8% 0.178 30.9)
-
Step 500
500
#F4361E
oklch(63% 0.228 30.9)
-
Step 600
600
#D51B00
oklch(55.6% 0.217 30.9)
-
Step 700
700
#B41500
oklch(49.1% 0.192 30.9)
-
Step 800
800
#950F00
oklch(42.7% 0.167 30.8)
-
Step 900
900 (this color)
#821003
oklch(38.9% 0.149 30.9)
-
Step 950
950
#4A0C05
oklch(27% 0.093 30.9)
#821003 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) | #383000 | 0.160 |
| Deuteranopia (no green cones) | #534900 | 0.144 |
| Tritanopia (no blue cones) | #90000F | 0.032 |
| Achromatopsia (no color) | #404040 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #821003
#821003
oklch(38.9% 0.149 30.9)
- #004E59
#004E59
oklch(38.9% 0.067 210.9)
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 #821003, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Maroon #800000 ΔE 0.014
- Dark Red #8B0000 ΔE 0.019
- Brick Red #8F1402 ΔE 0.030
- Blood #770001 ΔE 0.032
- Wine Red #7B0323 ΔE 0.041
- Chestnut #742802 ΔE 0.041
- Reddy Brown #6E1005 ΔE 0.045
- Blood Red #980002 ΔE 0.046
Use #821003 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.