#15224B
Closest named color: Oxford Blue (#1B263B). oklch(26.6% 0.078 267.6), rgb(21, 34, 75).
Aa
White text reads best on this color (15.41:1).
About this color
#15224B is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.078 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.036 away. White text reads best on it, at 15.41:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.36:1 |
| White text | 15.41:1 |
Values
| HEX | #15224B |
| RGB | rgb(21, 34, 75) |
| HSL | hsl(226, 56%, 19%) |
| OKLCH | oklch(26.6% 0.078 267.6) |
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 #15224B | 15.41:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #15224B | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #15224B text on white | 15.41:1 | AAA | Lc 102.2 | Preferred for body text |
| #15224B text on black | 1.36:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FC
oklch(88.5% 0.051 267)
-
Step 300
300
#A7BFFD
oklch(80.9% 0.092 268)
-
Step 400
400
#789BFC
oklch(70.6% 0.148 267.6)
-
Step 500
500
#587FFA
oklch(63.2% 0.188 267.5)
-
Step 600
600
#4064E9
oklch(55.6% 0.205 267.6)
-
Step 700
700
#3352CB
oklch(49.2% 0.191 267.7)
-
Step 800
800
#2A44A4
oklch(42.7% 0.158 267.6)
-
Step 900
900
#253B82
oklch(37.8% 0.123 267.3)
-
Step 950
950 (this color)
#15224B
oklch(26.6% 0.078 267.6)
#15224B 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) | #0C274C | 0.017 |
| Deuteranopia (no green cones) | #02224A | 0.020 |
| Tritanopia (no blue cones) | #002C32 | 0.067 |
| Achromatopsia (no color) | #252525 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15224B
#15224B
oklch(26.6% 0.078 267.6)
- #312300
#312300
oklch(26.6% 0.054 86.2)
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 #15224B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.036
- Marine #042E60 ΔE 0.049
- Dark #1B2431 ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.057
- Dark Indigo #1F0954 ΔE 0.060
- Navy Blue #001146 ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.064
- Rich Black #0D1B2A ΔE 0.066
Use #15224B 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.