#15224A
Closest named color: Oxford Blue (#1B263B). oklch(26.5% 0.076 267.5), rgb(21, 34, 74).
Aa
White text reads best on this color (15.44:1).
About this color
#15224A is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.076 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.034 away. White text reads best on it, at 15.44:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.35:1 |
| White text | 15.44:1 |
Values
| HEX | #15224A |
| RGB | rgb(21, 34, 74) |
| HSL | hsl(225, 56%, 19%) |
| OKLCH | oklch(26.5% 0.076 267.5) |
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 #15224A | 15.44:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #15224A | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #15224A text on white | 15.44:1 | AAA | Lc 102.2 | Preferred for body text |
| #15224A 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FB
oklch(88.5% 0.05 266.5)
-
Step 300
300
#A7BFFC
oklch(80.9% 0.091 267.7)
-
Step 400
400
#799CFA
oklch(70.8% 0.143 267.3)
-
Step 500
500
#587FF8
oklch(63% 0.186 267.4)
-
Step 600
600
#4065E7
oklch(55.6% 0.201 267.4)
-
Step 700
700
#3353C9
oklch(49.2% 0.187 267.4)
-
Step 800
800
#2A45A2
oklch(42.8% 0.154 267.2)
-
Step 900
900
#263B81
oklch(37.8% 0.121 267.7)
-
Step 950
950 (this color)
#15224A
oklch(26.5% 0.076 267.5)
#15224A 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) | #0D274B | 0.016 |
| Deuteranopia (no green cones) | #032249 | 0.019 |
| Tritanopia (no blue cones) | #002B32 | 0.063 |
| Achromatopsia (no color) | #242424 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15224A
#15224A
oklch(26.5% 0.076 267.5)
- #302300
#302300
oklch(26.4% 0.054 87.8)
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 #15224A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.034
- Dark #1B2431 ΔE 0.050
- Marine #042E60 ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.056
- Dark Indigo #1F0954 ΔE 0.061
- Navy Blue #001146 ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.064
- Rich Black #0D1B2A ΔE 0.064
Use #15224A 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.