#152151
Closest named color: Marine (#042E60). oklch(26.9% 0.089 269), rgb(21, 33, 81).
Aa
White text reads best on this color (15.34:1).
About this color
#152151 is a dark, moderately saturated blue. In OKLCH its lightness is 27%, its chroma 0.089 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.044 away. White text reads best on it, at 15.34:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.36:1 |
| White text | 15.34:1 |
Values
| HEX | #152151 |
| RGB | rgb(21, 33, 81) |
| HSL | hsl(228, 59%, 20%) |
| OKLCH | oklch(26.9% 0.089 269) |
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 #152151 | 15.34:1 | AAA | Lc -104.8 | Preferred for body text |
| Black text on #152151 | 1.36:1 | Fails | Lc 0.0 | Not readable |
| #152151 text on white | 15.34:1 | AAA | Lc 102.0 | Preferred for body text |
| #152151 text on black | 1.36:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#CAD8FF
oklch(88.4% 0.056 269.7)
-
Step 300
300
#A7BEFF
oklch(80.8% 0.096 269.2)
-
Step 400
400
#7A9AFF
oklch(70.7% 0.152 269)
-
Step 500
500
#5A7CFF
oklch(63% 0.198 269.1)
-
Step 600
600
#405CFA
oklch(55.6% 0.236 269.2)
-
Step 700
700
#334ADA
oklch(49.1% 0.219 269.1)
-
Step 800
800
#2A3EB0
oklch(42.7% 0.181 269.2)
-
Step 900
900
#25378B
oklch(37.7% 0.141 269.2)
-
Step 950
950 (this color)
#152151
oklch(26.9% 0.089 269)
#152151 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) | #012853 | 0.025 |
| Deuteranopia (no green cones) | #002250 | 0.021 |
| Tritanopia (no blue cones) | #002D35 | 0.074 |
| Achromatopsia (no color) | #252525 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #152151
#152151
oklch(26.9% 0.089 269)
- #312400
#312400
oklch(26.8% 0.055 88.3)
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 #152151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.047
- Dark Indigo #1F0954 ΔE 0.054
- Midnight Blue #191970 ΔE 0.058
- Navy Blue #001146 ΔE 0.061
- Dark #1B2431 ΔE 0.063
- Space Cadet #2B2D42 ΔE 0.063
- Prussian Blue #1D3557 ΔE 0.064
Use #152151 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.