#15396C
Closest named color: Marine Blue (#01386A). oklch(34.9% 0.098 257.8), rgb(21, 57, 108).
Aa
White text reads best on this color (11.45:1).
About this color
#15396C is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.098 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.014 away. White text reads best on it, at 11.45:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.83:1 |
| White text | 11.45:1 |
Values
| HEX | #15396C |
| RGB | rgb(21, 57, 108) |
| HSL | hsl(215, 67%, 25%) |
| OKLCH | oklch(34.9% 0.098 257.8) |
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 #15396C | 11.45:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #15396C | 1.83:1 | Fails | Lc 7.8 | Not readable |
| #15396C text on white | 11.45:1 | AAA | Lc 96.0 | Preferred for body text |
| #15396C text on black | 1.83:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C9DBF5
oklch(88.6% 0.041 257.5)
-
Step 300
300
#A3C3F0
oklch(80.9% 0.073 256.9)
-
Step 400
400
#71A2E9
oklch(70.7% 0.117 257.6)
-
Step 500
500
#4B89E3
oklch(63.2% 0.15 257.8)
-
Step 600
600
#2C71D0
oklch(55.6% 0.162 257.5)
-
Step 700
700
#1F5EB5
oklch(49.2% 0.152 257.8)
-
Step 800
800
#1C4D92
oklch(42.7% 0.125 257.8)
-
Step 900
900 (this color)
#15396C
oklch(34.9% 0.098 257.8)
-
Step 950
950
#122644
oklch(26.9% 0.062 258.3)
#15396C 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) | #1F3E6E | 0.019 |
| Deuteranopia (no green cones) | #0C366B | 0.012 |
| Tritanopia (no blue cones) | #00454D | 0.075 |
| Achromatopsia (no color) | #3A3A3A | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15396C
#15396C
oklch(34.9% 0.098 257.8)
- #4F3400
#4F3400
oklch(34.8% 0.073 76.9)
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 #15396C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.014
- Twilight Blue #0A437A ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.037
- Marine #042E60 ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.057
- Midnight Green #073B4C ΔE 0.061
- Dark Grey Blue #29465B ΔE 0.061
- Charcoal #264653 ΔE 0.070
Use #15396C 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.