#15254D
Closest named color: Oxford Blue (#1B263B). oklch(27.5% 0.077 265.3), rgb(21, 37, 77).
Aa
White text reads best on this color (14.96:1).
About this color
#15254D is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.077 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.035 away. White text reads best on it, at 14.96:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.40:1 |
| White text | 14.96:1 |
Values
| HEX | #15254D |
| RGB | rgb(21, 37, 77) |
| HSL | hsl(223, 57%, 19%) |
| OKLCH | oklch(27.5% 0.077 265.3) |
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 #15254D | 14.96:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #15254D | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #15254D text on white | 14.96:1 | AAA | Lc 101.6 | Preferred for body text |
| #15254D 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
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C9D9FC
oklch(88.5% 0.051 265.9)
-
Step 300
300
#A4C0FC
oklch(80.9% 0.091 265)
-
Step 400
400
#749DFB
oklch(70.7% 0.145 265.1)
-
Step 500
500
#5281F8
oklch(63.1% 0.185 265.3)
-
Step 600
600
#3866E7
oklch(55.5% 0.202 265.3)
-
Step 700
700
#2B54C9
oklch(49.1% 0.188 265.2)
-
Step 800
800
#2446A3
oklch(42.8% 0.156 265.1)
-
Step 900
900
#213C81
oklch(37.7% 0.121 265)
-
Step 950
950 (this color)
#15254D
oklch(27.5% 0.077 265.3)
#15254D 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) | #112A4E | 0.016 |
| Deuteranopia (no green cones) | #06244C | 0.016 |
| Tritanopia (no blue cones) | #002E35 | 0.063 |
| Achromatopsia (no color) | #272727 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15254D
#15254D
oklch(27.5% 0.077 265.3)
- #342500
#342500
oklch(27.5% 0.056 85.5)
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 #15254D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.035
- Marine #042E60 ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.051
- Dark #1B2431 ΔE 0.052
- Prussian Blue #1D3557 ΔE 0.054
- Gunmetal #293241 ΔE 0.062
- Dark Indigo #1F0954 ΔE 0.068
- Jet #212529 ΔE 0.069
Use #15254D 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.