#21224E
Closest named color: Oxford Blue (#1B263B). oklch(27.8% 0.079 278.9), rgb(33, 34, 78).
Aa
White text reads best on this color (14.96:1).
About this color
#21224E is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.079 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.041 away. White text reads best on it, at 14.96:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.40:1 |
| White text | 14.96:1 |
Values
| HEX | #21224E |
| RGB | rgb(33, 34, 78) |
| HSL | hsl(239, 41%, 22%) |
| OKLCH | oklch(27.8% 0.079 278.9) |
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 #21224E | 14.96:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #21224E | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #21224E text on white | 14.96:1 | AAA | Lc 101.7 | Preferred for body text |
| #21224E text on black | 1.40:1 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E8FC
oklch(93.5% 0.027 279.1)
-
Step 200
200
#D1D6FC
oklch(88.4% 0.053 279.4)
-
Step 300
300
#B3BBFD
oklch(81% 0.094 278.7)
-
Step 400
400
#8D94FC
oklch(70.6% 0.151 278.9)
-
Step 500
500
#7476F9
oklch(63.1% 0.191 278.8)
-
Step 600
600
#605AE8
oklch(55.6% 0.208 279.1)
-
Step 700
700
#5049CA
oklch(49.2% 0.193 279)
-
Step 800
800
#413DA3
oklch(42.8% 0.159 279)
-
Step 900
900
#363581
oklch(37.6% 0.125 279.1)
-
Step 950
950 (this color)
#21224E
oklch(27.8% 0.079 278.9)
#21224E 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) | #0C2950 | 0.031 |
| Deuteranopia (no green cones) | #07254D | 0.032 |
| Tritanopia (no blue cones) | #0E2C34 | 0.069 |
| Achromatopsia (no color) | #272727 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21224E
#21224E
oklch(27.8% 0.079 278.9)
- #302800
#302800
oklch(27.7% 0.057 97.6)
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 #21224E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.049
- Marine #042E60 ΔE 0.050
- Dark #1B2431 ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.058
- Dark Indigo #1F0954 ΔE 0.059
- Gunmetal #293241 ΔE 0.064
- Midnight Blue #191970 ΔE 0.066
Use #21224E 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.