#152F4F
Closest named color: Prussian Blue (#1D3557). oklch(30.2% 0.067 254.8), rgb(21, 47, 79).
Aa
White text reads best on this color (13.53:1).
About this color
#152F4F is a dark, muted blue. In OKLCH its lightness is 30%, its chroma 0.067 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.025 away. White text reads best on it, at 13.53:1.
| Hue family | Blues |
| Lightness | dark (30%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.55:1 |
| White text | 13.53:1 |
Values
| HEX | #152F4F |
| RGB | rgb(21, 47, 79) |
| HSL | hsl(213, 58%, 20%) |
| OKLCH | oklch(30.2% 0.067 254.8) |
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 #152F4F | 13.53:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #152F4F | 1.55:1 | Fails | Lc 0.0 | Not readable |
| #152F4F text on white | 13.53:1 | AAA | Lc 99.8 | Preferred for body text |
| #152F4F text on black | 1.55:1 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DBF6
oklch(88.4% 0.044 254.8)
-
Step 300
300
#9EC4F3
oklch(80.9% 0.078 254)
-
Step 400
400
#68A3EE
oklch(70.7% 0.127 255.1)
-
Step 500
500
#3B8AE8
oklch(63.1% 0.161 254.8)
-
Step 600
600
#0F72D6
oklch(55.7% 0.174 254.6)
-
Step 700
700
#005FB8
oklch(49.1% 0.16 254.6)
-
Step 800
800
#074E96
oklch(42.8% 0.134 254.6)
-
Step 900
900
#124178
oklch(37.6% 0.106 255.1)
-
Step 950
950 (this color)
#152F4F
oklch(30.2% 0.067 254.8)
#152F4F 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) | #213150 | 0.017 |
| Deuteranopia (no green cones) | #182C4E | 0.010 |
| Tritanopia (no blue cones) | #00363B | 0.052 |
| Achromatopsia (no color) | #2E2E2E | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #152F4F
#152F4F
oklch(30.2% 0.067 254.8)
- #412900
#412900
oklch(30.3% 0.064 75)
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 #152F4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.025
- Marine #042E60 ΔE 0.033
- Space Cadet #2B2D42 ΔE 0.036
- Gunmetal #293241 ΔE 0.039
- Oxford Blue #1B263B ΔE 0.042
- Midnight Green #073B4C ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.044
- Marine Blue #01386A ΔE 0.051
Use #152F4F 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.