#152D7B
Closest named color: Marine Blue (#01386A). oklch(33.4% 0.136 265.9), rgb(21, 45, 123).
Aa
White text reads best on this color (12.40:1).
About this color
#152D7B is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.136 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.044 away. White text reads best on it, at 12.40:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.69:1 |
| White text | 12.40:1 |
Values
| HEX | #152D7B |
| RGB | rgb(21, 45, 123) |
| HSL | hsl(226, 71%, 28%) |
| OKLCH | oklch(33.4% 0.136 265.9) |
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 #152D7B | 12.40:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #152D7B | 1.69:1 | Fails | Lc 0.0 | Not readable |
| #152D7B text on white | 12.40:1 | AAA | Lc 97.6 | Preferred for body text |
| #152D7B text on black | 1.69:1 | 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 900.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4C0FF
oklch(81% 0.095 265.8)
-
Step 400
400
#749CFF
oklch(70.8% 0.152 266)
-
Step 500
500
#507FFF
oklch(63.1% 0.197 265.8)
-
Step 600
600
#3461F5
oklch(55.5% 0.227 266)
-
Step 700
700
#284FD5
oklch(49.1% 0.21 266)
-
Step 800
800
#2142AC
oklch(42.7% 0.174 265.8)
-
Step 900
900 (this color)
#152D7B
oklch(33.4% 0.136 265.9)
-
Step 950
950
#122350
oklch(27.1% 0.086 265.4)
#152D7B 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) | #00397E | 0.032 |
| Deuteranopia (no green cones) | #00307A | 0.014 |
| Tritanopia (no blue cones) | #00414F | 0.106 |
| Achromatopsia (no color) | #343434 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #152D7B
#152D7B
oklch(33.4% 0.136 265.9)
- #463300
#463300
oklch(33.4% 0.068 85.7)
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 #152D7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.044
- Midnight Blue #191970 ΔE 0.050
- Marine #042E60 ΔE 0.050
- Royal #0C1793 ΔE 0.058
- Twilight Blue #0A437A ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.070
- Dark Blue #00008B ΔE 0.079
- Cobalt #1E488F ΔE 0.081
Use #152D7B 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.