#15274D
Closest named color: Oxford Blue (#1B263B). oklch(28% 0.074 263.3), rgb(21, 39, 77).
Aa
White text reads best on this color (14.69:1).
About this color
#15274D is a dark, moderately saturated blue. In OKLCH its lightness is 28%, its chroma 0.074 and its hue 263°. 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 14.69:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.42:1 |
| White text | 14.69:1 |
Values
| HEX | #15274D |
| RGB | rgb(21, 39, 77) |
| HSL | hsl(221, 57%, 19%) |
| OKLCH | oklch(28% 0.074 263.3) |
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 #15274D | 14.69:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #15274D | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #15274D text on white | 14.69:1 | AAA | Lc 101.3 | Preferred for body text |
| #15274D text on black | 1.42:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAFA
oklch(88.6% 0.048 263.1)
-
Step 300
300
#A3C1FA
oklch(80.9% 0.087 263)
-
Step 400
400
#729EF8
oklch(70.7% 0.141 263.5)
-
Step 500
500
#4E83F4
oklch(63.1% 0.179 263.3)
-
Step 600
600
#3369E3
oklch(55.6% 0.195 263.4)
-
Step 700
700
#2657C5
oklch(49.2% 0.18 263.2)
-
Step 800
800
#20489F
oklch(42.7% 0.149 263)
-
Step 900
900
#1F3D7F
oklch(37.7% 0.118 263.4)
-
Step 950
950 (this color)
#15274D
oklch(28% 0.074 263.3)
#15274D 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) | #152B4E | 0.013 |
| Deuteranopia (no green cones) | #0B264C | 0.012 |
| Tritanopia (no blue cones) | #003036 | 0.061 |
| Achromatopsia (no color) | #282828 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15274D
#15274D
oklch(28% 0.074 263.3)
- #362600
#362600
oklch(28% 0.057 84.4)
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 #15274D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.034
- Marine #042E60 ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.048
- Dark #1B2431 ΔE 0.051
- Gunmetal #293241 ΔE 0.056
- Midnight Green #073B4C ΔE 0.066
- Marine Blue #01386A ΔE 0.067
Use #15274D 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.