#0A506D
Closest named color: Deep Sea Blue (#015482). oklch(40.6% 0.079 232.7), rgb(10, 80, 109).
Aa
White text reads best on this color (8.81:1).
About this color
#0A506D is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.079 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.035 away. White text reads best on it, at 8.81:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.38:1 |
| White text | 8.81:1 |
Values
| HEX | #0A506D |
| RGB | rgb(10, 80, 109) |
| HSL | hsl(198, 83%, 23%) |
| OKLCH | oklch(40.6% 0.079 232.7) |
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 #0A506D | 8.81:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #0A506D | 2.38:1 | Fails | Lc 14.2 | Not readable |
| #0A506D text on white | 8.81:1 | AAA | Lc 89.8 | Fine for body text |
| #0A506D text on black | 2.38:1 | Fails | Lc -12.5 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF1
oklch(93.7% 0.013 228.9)
-
Step 200
200
#C9DDE8
oklch(88.6% 0.026 231.7)
-
Step 300
300
#A4C6DA
oklch(80.8% 0.046 233.9)
-
Step 400
400
#70A9C7
oklch(70.7% 0.074 232.2)
-
Step 500
500
#4693B9
oklch(63% 0.095 232.5)
-
Step 600
600
#217DA5
oklch(55.6% 0.103 232.3)
-
Step 700
700
#11698E
oklch(49.1% 0.096 233)
-
Step 800
800 (this color)
#0A506D
oklch(40.6% 0.079 232.7)
-
Step 900
900
#19475D
oklch(37.7% 0.062 232.6)
-
Step 950
950
#102A36
oklch(27.1% 0.039 230.5)
#0A506D 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) | #414F6E | 0.050 |
| Deuteranopia (no green cones) | #35466D | 0.044 |
| Tritanopia (no blue cones) | #00585A | 0.048 |
| Achromatopsia (no color) | #4A4A4A | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A506D
#0A506D
oklch(40.6% 0.079 232.7)
- #6A3C1C
#6A3C1C
oklch(40.6% 0.079 53.2)
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 #0A506D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.040
- Light Navy #155084 ΔE 0.040
- Deep Teal #00555A ΔE 0.041
- Charcoal #264653 ΔE 0.048
- Petrol #005F6A ΔE 0.050
- Twilight Blue #0A437A ΔE 0.050
- Dark Teal #014D4E ΔE 0.053
Use #0A506D 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.