#21214B
Closest named color: Oxford Blue (#1B263B). oklch(27.3% 0.076 280.1), rgb(33, 33, 75).
Aa
White text reads best on this color (15.17:1).
About this color
#21214B is a dark, moderately saturated purple. In OKLCH its lightness is 27%, its chroma 0.076 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.038 away. White text reads best on it, at 15.17:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.38:1 |
| White text | 15.17:1 |
Values
| HEX | #21214B |
| RGB | rgb(33, 33, 75) |
| HSL | hsl(240, 39%, 21%) |
| OKLCH | oklch(27.3% 0.076 280.1) |
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 #21214B | 15.17:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #21214B | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #21214B text on white | 15.17:1 | AAA | Lc 101.9 | Preferred for body text |
| #21214B text on black | 1.38:1 | 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
#F4F5FE
oklch(97.2% 0.012 281.1)
-
Step 100
100
#E6E8FC
oklch(93.5% 0.027 281.3)
-
Step 200
200
#D2D6FA
oklch(88.4% 0.05 280.3)
-
Step 300
300
#B5BBFA
oklch(81% 0.089 280)
-
Step 400
400
#9095F8
oklch(70.8% 0.143 279.9)
-
Step 500
500
#7776F4
oklch(63% 0.184 280.1)
-
Step 600
600
#635BE3
oklch(55.6% 0.2 280.3)
-
Step 700
700
#524AC5
oklch(49.1% 0.185 280)
-
Step 800
800
#433E9F
oklch(42.8% 0.152 280.1)
-
Step 900
900
#38367F
oklch(37.8% 0.12 280.2)
-
Step 950
950 (this color)
#21214B
oklch(27.3% 0.076 280.1)
#21214B 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) | #0D274C | 0.029 |
| Deuteranopia (no green cones) | #09244A | 0.031 |
| Tritanopia (no blue cones) | #102A32 | 0.066 |
| Achromatopsia (no color) | #262626 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21214B
#21214B
oklch(27.3% 0.076 280.1)
- #2E2700
#2E2700
oklch(27.2% 0.056 98.9)
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 #21214B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.049
- Dark #1B2431 ΔE 0.053
- Marine #042E60 ΔE 0.055
- Dark Indigo #1F0954 ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.062
- Gunmetal #293241 ΔE 0.065
- Jet #212529 ΔE 0.069
Use #21214B 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.