#21223A
Closest named color: Oxford Blue (#1B263B). oklch(26.3% 0.045 281), rgb(33, 34, 58).
Aa
White text reads best on this color (15.50:1).
About this color
#21223A is a dark, muted purple. In OKLCH its lightness is 26%, its chroma 0.045 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.015 away. White text reads best on it, at 15.50:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.35:1 |
| White text | 15.50:1 |
Values
| HEX | #21223A |
| RGB | rgb(33, 34, 58) |
| HSL | hsl(238, 27%, 18%) |
| OKLCH | oklch(26.3% 0.045 281) |
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 #21223A | 15.50:1 | AAA | Lc -105.1 | Preferred for body text |
| Black text on #21223A | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #21223A text on white | 15.50:1 | AAA | Lc 102.4 | Preferred for body text |
| #21223A text on black | 1.35:1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F4
oklch(93.6% 0.015 281.9)
-
Step 200
200
#D5D7ED
oklch(88.4% 0.03 281.6)
-
Step 300
300
#BABDE3
oklch(80.9% 0.054 281.6)
-
Step 400
400
#979BD5
oklch(70.8% 0.085 280.9)
-
Step 500
500
#7E81C9
oklch(63.1% 0.108 281)
-
Step 600
600
#6869B6
oklch(55.5% 0.118 281.3)
-
Step 700
700
#57589D
oklch(49.2% 0.109 281)
-
Step 800
800
#47487F
oklch(42.8% 0.09 281.1)
-
Step 900
900
#3B3D66
oklch(37.8% 0.07 280.4)
-
Step 950
950 (this color)
#21223A
oklch(26.3% 0.045 281)
#21223A 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) | #1A253B | 0.014 |
| Deuteranopia (no green cones) | #192339 | 0.013 |
| Tritanopia (no blue cones) | #1A272B | 0.040 |
| Achromatopsia (no color) | #242424 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21223A
#21223A
oklch(26.3% 0.045 281)
- #2A2509
#2A2509
oklch(26.3% 0.044 99.2)
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 #21223A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.015
- Dark #1B2431 ΔE 0.023
- Jet #212529 ΔE 0.037
- Space Cadet #2B2D42 ΔE 0.042
- Rich Black #0D1B2A ΔE 0.051
- Gunmetal #293241 ΔE 0.056
- Prussian Blue #1D3557 ΔE 0.072
- Marine #042E60 ΔE 0.076
Use #21223A 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.