#15314C
Closest named color: Prussian Blue (#1D3557). oklch(30.6% 0.06 249.6), rgb(21, 49, 76).
Aa
White text reads best on this color (13.32:1).
About this color
#15314C is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.060 and its hue 250°. 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 13.32:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.57:1 |
| White text | 13.32:1 |
Values
| HEX | #15314C |
| RGB | rgb(21, 49, 76) |
| HSL | hsl(209, 57%, 19%) |
| OKLCH | oklch(30.6% 0.06 249.6) |
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 #15314C | 13.32:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #15314C | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #15314C text on white | 13.32:1 | AAA | Lc 99.6 | Preferred for body text |
| #15314C text on black | 1.57:1 | 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
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C6DCF3
oklch(88.5% 0.04 249.5)
-
Step 300
300
#9EC5ED
oklch(80.9% 0.071 249.4)
-
Step 400
400
#67A6E4
oklch(70.8% 0.112 249.3)
-
Step 500
500
#378EDC
oklch(63.2% 0.144 249.2)
-
Step 600
600
#0076CA
oklch(55.7% 0.156 249.7)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800
#00518D
oklch(42.7% 0.12 249.5)
-
Step 900
900
#0F4471
oklch(37.8% 0.094 249.2)
-
Step 950
950 (this color)
#15314C
oklch(30.6% 0.06 249.6)
#15314C 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) | #25324D | 0.021 |
| Deuteranopia (no green cones) | #1E2D4B | 0.015 |
| Tritanopia (no blue cones) | #00373B | 0.045 |
| Achromatopsia (no color) | #2F2F2F | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15314C
#15314C
oklch(30.6% 0.06 249.6)
- #422907
#422907
oklch(30.5% 0.059 69.7)
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 #15314C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.025
- Gunmetal #293241 ΔE 0.032
- Space Cadet #2B2D42 ΔE 0.033
- Midnight Green #073B4C ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.037
- Marine #042E60 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.042
- Marine Blue #01386A ΔE 0.054
Use #15314C 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.