#210301
Closest named color: Very Dark Brown (#1D0200). oklch(16.4% 0.056 32), rgb(33, 3, 1).
Aa
White text reads best on this color (19.47:1).
About this color
#210301 is a very dark, muted red. In OKLCH its lightness is 16%, its chroma 0.056 and its hue 32°. Its hue sits on the warm side of the wheel. The nearest named color is Very Dark Brown (#1D0200), ΔE 0.013 away. White text reads best on it, at 19.47:1.
| Hue family | Reds |
| Lightness | very dark (16%) |
| Chroma | muted (0.056) |
| Temperature | warm |
| Nearest name | Very Dark Brown (#1D0200) |
| Black text | 1.07:1 |
| White text | 19.47:1 |
Values
| HEX | #210301 |
| RGB | rgb(33, 3, 1) |
| HSL | hsl(4, 94%, 7%) |
| OKLCH | oklch(16.4% 0.056 32) |
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 #210301 | 19.47:1 | AAA | Lc -107.4 | Preferred for body text |
| Black text on #210301 | 1.07:1 | Fails | Lc 0.0 | Not readable |
| #210301 text on white | 19.47:1 | AAA | Lc 105.3 | Preferred for body text |
| #210301 text on black | 1.07:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#FBF3F2
oklch(97% 0.009 26)
-
Step 100
100
#F6E6E2
oklch(93.7% 0.018 34.3)
-
Step 200
200
#F1D1CA
oklch(88.6% 0.037 32.4)
-
Step 300
300
#E8B2A6
oklch(81% 0.066 32.8)
-
Step 400
400
#DA8777
oklch(70.6% 0.105 31.6)
-
Step 500
500
#CE6653
oklch(63% 0.136 31.8)
-
Step 600
600
#BA4B38
oklch(55.7% 0.148 31.8)
-
Step 700
700
#A03B2A
oklch(49.1% 0.138 31.8)
-
Step 800
800
#823224
oklch(42.8% 0.114 32)
-
Step 900
900
#682D22
oklch(37.7% 0.088 32.2)
-
Step 950
950 (this color)
#210301
oklch(16.4% 0.056 32)
#210301 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) | #0B0801 | 0.058 |
| Deuteranopia (no green cones) | #130F01 | 0.052 |
| Tritanopia (no blue cones) | #260003 | 0.018 |
| Achromatopsia (no color) | #0D0D0D | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #210301
#210301
oklch(16.4% 0.056 32)
- #001115
#001115
oklch(16.3% 0.028 212.1)
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 #210301, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Very Dark Brown #1D0200 ΔE 0.013
- Almost Black #070D0D ΔE 0.067
- Dark Maroon #3C0008 ΔE 0.072
- Deep Brown #410200 ΔE 0.084
- Rich Navy #001219 ΔE 0.087
- Dark Brown #341C02 ΔE 0.095
- Rich Black #0D1B2A ΔE 0.102
- Mahogany #4A0100 ΔE 0.106
Use #210301 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.