#21203E
Closest named color: Oxford Blue (#1B263B). oklch(26.1% 0.055 283.4), rgb(33, 32, 62).
Aa
White text reads best on this color (15.66:1).
About this color
#21203E is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.055 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.023 away. White text reads best on it, at 15.66:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.34:1 |
| White text | 15.66:1 |
Values
| HEX | #21203E |
| RGB | rgb(33, 32, 62) |
| HSL | hsl(242, 32%, 18%) |
| OKLCH | oklch(26.1% 0.055 283.4) |
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 #21203E | 15.66:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #21203E | 1.34:1 | Fails | Lc 0.0 | Not readable |
| #21203E text on white | 15.66:1 | AAA | Lc 102.5 | Preferred for body text |
| #21203E text on black | 1.34:1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E8F7
oklch(93.5% 0.02 286)
-
Step 200
200
#D5D7F1
oklch(88.6% 0.036 282.1)
-
Step 300
300
#BABCEA
oklch(80.9% 0.065 282.9)
-
Step 400
400
#9898E0
oklch(70.8% 0.104 283.4)
-
Step 500
500
#807DD7
oklch(63.2% 0.133 283.4)
-
Step 600
600
#6A64C5
oklch(55.6% 0.146 283.4)
-
Step 700
700
#5952AA
oklch(49.1% 0.136 283.8)
-
Step 800
800
#484489
oklch(42.7% 0.111 283.2)
-
Step 900
900
#3C3A6E
oklch(37.7% 0.087 283.1)
-
Step 950
950 (this color)
#21203E
oklch(26.1% 0.055 283.4)
#21203E 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) | #15243F | 0.021 |
| Deuteranopia (no green cones) | #14223D | 0.021 |
| Tritanopia (no blue cones) | #18262C | 0.047 |
| Achromatopsia (no color) | #232323 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21203E
#21203E
oklch(26.1% 0.055 283.4)
- #292500
#292500
oklch(26.1% 0.055 103.4)
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 #21203E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.023
- Dark #1B2431 ΔE 0.033
- Space Cadet #2B2D42 ΔE 0.047
- Jet #212529 ΔE 0.048
- Rich Black #0D1B2A ΔE 0.054
- Gunmetal #293241 ΔE 0.062
- Dark Indigo #1F0954 ΔE 0.070
- Dark Purple #35063E ΔE 0.071
Use #21203E 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.