#152F4B
Closest named color: Prussian Blue (#1D3557). oklch(30% 0.06 252), rgb(21, 47, 75).
Aa
White text reads best on this color (13.63:1).
About this color
#152F4B is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.060 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.029 away. White text reads best on it, at 13.63:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.54:1 |
| White text | 13.63:1 |
Values
| HEX | #152F4B |
| RGB | rgb(21, 47, 75) |
| HSL | hsl(211, 56%, 19%) |
| OKLCH | oklch(30% 0.06 252) |
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 #152F4B | 13.63:1 | AAA | Lc -103.1 | Preferred for body text |
| Black text on #152F4B | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #152F4B text on white | 13.63:1 | AAA | Lc 100.0 | Preferred for body text |
| #152F4B text on black | 1.54:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C7DBF3
oklch(88.4% 0.04 253)
-
Step 300
300
#9FC4EE
oklch(80.8% 0.072 251.9)
-
Step 400
400
#6AA5E6
oklch(70.8% 0.114 251.9)
-
Step 500
500
#3D8CDE
oklch(63% 0.146 252)
-
Step 600
600
#1274CC
oklch(55.5% 0.159 252.1)
-
Step 700
700
#0061B0
oklch(49% 0.147 252)
-
Step 800
800
#09508F
oklch(42.8% 0.122 251.9)
-
Step 900
900
#134372
oklch(37.7% 0.095 251.6)
-
Step 950
950 (this color)
#152F4B
oklch(30% 0.06 252)
#152F4B 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) | #23314C | 0.020 |
| Deuteranopia (no green cones) | #1B2B4A | 0.014 |
| Tritanopia (no blue cones) | #003639 | 0.049 |
| Achromatopsia (no color) | #2E2E2E | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #152F4B
#152F4B
oklch(30% 0.06 252)
- #402804
#402804
oklch(30% 0.06 72.1)
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 #152F4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.029
- Space Cadet #2B2D42 ΔE 0.032
- Gunmetal #293241 ΔE 0.035
- Oxford Blue #1B263B ΔE 0.037
- Midnight Green #073B4C ΔE 0.040
- Marine #042E60 ΔE 0.040
- Dark Blue Grey #1F3B4D ΔE 0.043
- Dark #1B2431 ΔE 0.053
Use #152F4B 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.