#21203D
Closest named color: Oxford Blue (#1B263B). oklch(26% 0.054 283.6), rgb(33, 32, 61).
Aa
White text reads best on this color (15.68:1).
About this color
#21203D is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.054 and its hue 284°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.022 away. White text reads best on it, at 15.68:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.33:1 |
| White text | 15.68:1 |
Values
| HEX | #21203D |
| RGB | rgb(33, 32, 61) |
| HSL | hsl(242, 31%, 18%) |
| OKLCH | oklch(26% 0.054 283.6) |
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 #21203D | 15.68:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #21203D | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #21203D text on white | 15.68:1 | AAA | Lc 102.6 | Preferred for body text |
| #21203D text on black | 1.33:1 | 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
#E8E9F6
oklch(93.7% 0.018 282.5)
-
Step 200
200
#D5D7F0
oklch(88.5% 0.034 282)
-
Step 300
300
#BBBCE9
oklch(81% 0.063 283.9)
-
Step 400
400
#9898DE
oklch(70.7% 0.102 283.5)
-
Step 500
500
#807DD5
oklch(63.1% 0.13 283.6)
-
Step 600
600
#6A65C2
oklch(55.6% 0.141 283.3)
-
Step 700
700
#5953A7
oklch(49.1% 0.131 283.7)
-
Step 800
800
#494488
oklch(42.7% 0.11 284.1)
-
Step 900
900
#3C3A6D
oklch(37.7% 0.086 283.3)
-
Step 950
950 (this color)
#21203D
oklch(26% 0.054 283.6)
#21203D 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) | #16243E | 0.020 |
| Deuteranopia (no green cones) | #15223C | 0.020 |
| Tritanopia (no blue cones) | #19262B | 0.047 |
| Achromatopsia (no color) | #232323 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21203D
#21203D
oklch(26% 0.054 283.6)
- #292501
#292501
oklch(26.1% 0.054 103.2)
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 #21203D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.022
- Dark #1B2431 ΔE 0.031
- Jet #212529 ΔE 0.046
- Space Cadet #2B2D42 ΔE 0.047
- Rich Black #0D1B2A ΔE 0.052
- Gunmetal #293241 ΔE 0.062
- Dark Purple #35063E ΔE 0.072
- Dark Indigo #1F0954 ΔE 0.072
Use #21203D 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.