#015575
Closest named color: Deep Sea Blue (#015482). oklch(42.3% 0.087 232.7), rgb(1, 85, 117).
Aa
White text reads best on this color (8.21:1).
About this color
#015575 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.087 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.023 away. White text reads best on it, at 8.21:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.55:1 |
| White text | 8.21:1 |
Values
| HEX | #015575 |
| RGB | rgb(1, 85, 117) |
| HSL | hsl(197, 98%, 23%) |
| OKLCH | oklch(42.3% 0.087 232.7) |
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 #015575 | 8.21:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #015575 | 2.55:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #015575 text on white | 8.21:1 | AAA | Lc 87.9 | Fine for body text |
| #015575 text on black | 2.55:1 | Fails | Lc -14.3 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE9
oklch(88.6% 0.028 232.7)
-
Step 300
300
#A1C7DC
oklch(80.9% 0.05 232.4)
-
Step 400
400
#6BAACB
oklch(70.8% 0.081 232.4)
-
Step 500
500
#3D94BE
oklch(63.2% 0.104 232.8)
-
Step 600
600
#097DAA
oklch(55.5% 0.113 233.1)
-
Step 700
700
#006990
oklch(49% 0.101 232.9)
-
Step 800
800 (this color)
#015575
oklch(42.3% 0.087 232.7)
-
Step 900
900
#12475F
oklch(37.6% 0.067 232.6)
-
Step 950
950
#0D2A38
oklch(27% 0.043 232.5)
#015575 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) | #455476 | 0.055 |
| Deuteranopia (no green cones) | #374B74 | 0.045 |
| Tritanopia (no blue cones) | #005E60 | 0.052 |
| Achromatopsia (no color) | #4F4F4F | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #015575
#015575
oklch(42.3% 0.087 232.7)
- #723F1B
#723F1B
oklch(42.3% 0.086 53.1)
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 #015575, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.023
- Light Navy #155084 ΔE 0.033
- Petrol #005F6A ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.046
- Deep Teal #00555A ΔE 0.047
- Dusk Blue #26538D ΔE 0.048
- YInMn Blue #415A77 ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.056
Use #015575 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.