#015178
Closest named color: Deep Sea Blue (#015482). oklch(41.4% 0.093 239.1), rgb(1, 81, 120).
Aa
White text reads best on this color (8.57:1).
About this color
#015178 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.093 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.018 away. White text reads best on it, at 8.57:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.44:1 |
| White text | 8.57:1 |
Values
| HEX | #015178 |
| RGB | rgb(1, 81, 120) |
| HSL | hsl(200, 98%, 24%) |
| OKLCH | oklch(41.4% 0.093 239.1) |
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 #015178 | 8.57:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #015178 | 2.44:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #015178 text on white | 8.57:1 | AAA | Lc 88.9 | Fine for body text |
| #015178 text on black | 2.44:1 | Fails | Lc -13.3 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C8DCEB
oklch(88.4% 0.03 240.2)
-
Step 300
300
#A1C6E0
oklch(80.8% 0.054 239)
-
Step 400
400
#6CA8D1
oklch(70.6% 0.087 239.5)
-
Step 500
500
#3F92C5
oklch(63.1% 0.111 239)
-
Step 600
600
#117BB2
oklch(55.5% 0.121 239.4)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800 (this color)
#015178
oklch(41.4% 0.093 239.1)
-
Step 900
900
#144664
oklch(37.7% 0.073 239.6)
-
Step 950
950
#0E293A
oklch(26.9% 0.046 239.3)
#015178 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) | #3E527A | 0.049 |
| Deuteranopia (no green cones) | #2F4877 | 0.037 |
| Tritanopia (no blue cones) | #005B5F | 0.060 |
| Achromatopsia (no color) | #4C4C4C | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #015178
#015178
oklch(41.4% 0.093 239.1)
- #6F3D08
#6F3D08
oklch(41.4% 0.092 59.7)
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 #015178, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.018
- Light Navy #155084 ΔE 0.023
- Dusk Blue #26538D ΔE 0.043
- Twilight Blue #0A437A ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.049
- Cobalt #1E488F ΔE 0.052
- Dark Grey Blue #29465B ΔE 0.054
- Petrol #005F6A ΔE 0.056
Use #015178 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.