#0A5A7B
Closest named color: Deep Sea Blue (#015482). oklch(44.1% 0.088 233.2), rgb(10, 90, 123).
Aa
White text reads best on this color (7.60:1).
About this color
#0A5A7B is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.088 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.025 away. White text reads best on it, at 7.60:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.76:1 |
| White text | 7.60:1 |
Values
| HEX | #0A5A7B |
| RGB | rgb(10, 90, 123) |
| HSL | hsl(198, 85%, 26%) |
| OKLCH | oklch(44.1% 0.088 233.2) |
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 #0A5A7B | 7.60:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #0A5A7B | 2.76:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #0A5A7B text on white | 7.60:1 | AAA | Lc 86.0 | Fine for body text |
| #0A5A7B text on black | 2.76:1 | Fails | Lc -16.1 | Dividers and decoration only |
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
#A1C7DD
oklch(80.9% 0.051 233.6)
-
Step 400
400
#6AAACC
oklch(70.8% 0.082 232.8)
-
Step 500
500
#3C94BE
oklch(63.2% 0.104 232.6)
-
Step 600
600
#067DAB
oklch(55.5% 0.114 233.5)
-
Step 700
700
#006991
oklch(49% 0.102 233.6)
-
Step 800
800 (this color)
#0A5A7B
oklch(44.1% 0.088 233.2)
-
Step 900
900
#124760
oklch(37.6% 0.069 233.7)
-
Step 950
950
#0D2A38
oklch(27% 0.043 232.5)
#0A5A7B 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) | #49597D | 0.055 |
| Deuteranopia (no green cones) | #3B4F7A | 0.046 |
| Tritanopia (no blue cones) | #006365 | 0.053 |
| Achromatopsia (no color) | #545454 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A5A7B
#0A5A7B
oklch(44.1% 0.088 233.2)
- #78441F
#78441F
oklch(44.2% 0.088 53.6)
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 #0A5A7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.033
- Petrol #005F6A ΔE 0.037
- Light Navy #155084 ΔE 0.037
- Dusk Blue #26538D ΔE 0.043
- YInMn Blue #415A77 ΔE 0.044
- Peacock Blue #016795 ΔE 0.052
- Denim #3B638C ΔE 0.055
Use #0A5A7B 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.