#01508B
Closest named color: Light Navy (#155084). oklch(42.4% 0.118 249.5), rgb(1, 80, 139).
Aa
White text reads best on this color (8.32:1).
About this color
#01508B is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.118 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.013 away. White text reads best on it, at 8.32:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.52:1 |
| White text | 8.32:1 |
Values
| HEX | #01508B |
| RGB | rgb(1, 80, 139) |
| HSL | hsl(206, 99%, 27%) |
| OKLCH | oklch(42.4% 0.118 249.5) |
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 #01508B | 8.32:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #01508B | 2.52:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #01508B text on white | 8.32:1 | AAA | Lc 88.1 | Fine for body text |
| #01508B text on black | 2.52:1 | Fails | Lc -14.0 | 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 800.
-
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
#C7DCF2
oklch(88.6% 0.038 249.5)
-
Step 300
300
#9FC5EC
oklch(80.9% 0.069 249.4)
-
Step 400
400
#68A6E3
oklch(70.8% 0.111 249.3)
-
Step 500
500
#3A8EDA
oklch(63.1% 0.14 249.2)
-
Step 600
600
#0776C8
oklch(55.6% 0.153 249.6)
-
Step 700
700
#0063AA
oklch(49.1% 0.137 249.4)
-
Step 800
800 (this color)
#01508B
oklch(42.4% 0.118 249.5)
-
Step 900
900
#114470
oklch(37.8% 0.092 249.2)
-
Step 950
950
#0C2841
oklch(27% 0.058 248.6)
#01508B 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) | #32548D | 0.036 |
| Deuteranopia (no green cones) | #1A498A | 0.021 |
| Tritanopia (no blue cones) | #005E66 | 0.085 |
| Achromatopsia (no color) | #4E4E4E | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #01508B
#01508B
oklch(42.4% 0.118 249.5)
- #6E4300
#6E4300
oklch(42.4% 0.092 69)
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 #01508B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.013
- Deep Sea Blue #015482 ΔE 0.021
- Dusk Blue #26538D ΔE 0.024
- Cobalt #1E488F ΔE 0.026
- Twilight Blue #0A437A ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.058
- Peacock Blue #016795 ΔE 0.069
Use #01508B 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.