#015180
Closest named color: Deep Sea Blue (#015482). oklch(41.9% 0.103 243.9), rgb(1, 81, 128).
Aa
White text reads best on this color (8.43:1).
About this color
#015180 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.103 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.009 away. White text reads best on it, at 8.43:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.48:1 |
| White text | 8.43:1 |
Values
| HEX | #015180 |
| RGB | rgb(1, 81, 128) |
| HSL | hsl(202, 98%, 25%) |
| OKLCH | oklch(41.9% 0.103 243.9) |
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 #015180 | 8.43:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #015180 | 2.48:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #015180 text on white | 8.43:1 | AAA | Lc 88.5 | Fine for body text |
| #015180 text on black | 2.48:1 | Fails | Lc -13.7 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C7DCEE
oklch(88.4% 0.034 244)
-
Step 300
300
#A0C6E5
oklch(81% 0.06 243.2)
-
Step 400
400
#6AA7D8
oklch(70.6% 0.096 244)
-
Step 500
500
#3D90CE
oklch(63% 0.123 244.3)
-
Step 600
600
#0C79BB
oklch(55.5% 0.134 244.2)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800 (this color)
#015180
oklch(41.9% 0.103 243.9)
-
Step 900
900
#134569
oklch(37.7% 0.081 244.5)
-
Step 950
950
#0D293D
oklch(27% 0.05 242.9)
#015180 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) | #3A5382 | 0.044 |
| Deuteranopia (no green cones) | #29487F | 0.032 |
| Tritanopia (no blue cones) | #005D62 | 0.072 |
| Achromatopsia (no color) | #4D4D4D | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #015180
#015180
oklch(41.9% 0.103 243.9)
- #703F00
#703F00
oklch(41.8% 0.095 63.3)
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 #015180, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.009
- Light Navy #155084 ΔE 0.011
- Dusk Blue #26538D ΔE 0.032
- Cobalt #1E488F ΔE 0.041
- Twilight Blue #0A437A ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.062
- YInMn Blue #415A77 ΔE 0.063
Use #015180 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.