#0C5A99
Closest named color: Dusk Blue (#26538D). oklch(45.9% 0.123 249.8), rgb(12, 90, 153).
Aa
White text reads best on this color (7.14:1).
About this color
#0C5A99 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.123 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.027 away. White text reads best on it, at 7.14:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.93:1 |
| White text | 7.14:1 |
Values
| HEX | #0C5A99 |
| RGB | rgb(12, 90, 153) |
| HSL | hsl(207, 85%, 32%) |
| OKLCH | oklch(45.9% 0.123 249.8) |
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 #0C5A99 | 7.14:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #0C5A99 | 2.93:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #0C5A99 text on white | 7.14:1 | AAA | Lc 84.3 | Fine for body text |
| #0C5A99 text on black | 2.93:1 | Fails | Lc -17.7 | 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 700.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C9DBEF
oklch(88.4% 0.034 251)
-
Step 300
300
#A4C4E6
oklch(80.8% 0.059 250.1)
-
Step 400
400
#71A5DA
oklch(70.6% 0.096 249.8)
-
Step 500
500
#4A8ED0
oklch(63.2% 0.122 249.7)
-
Step 600
600
#2977BD
oklch(55.7% 0.132 249.6)
-
Step 700
700 (this color)
#0C5A99
oklch(45.9% 0.123 249.8)
-
Step 800
800
#195184
oklch(42.6% 0.102 250)
-
Step 900
900
#1C446A
oklch(37.8% 0.079 249.7)
-
Step 950
950
#11283E
oklch(27% 0.05 249.3)
#0C5A99 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) | #3A5E9C | 0.037 |
| Deuteranopia (no green cones) | #235298 | 0.023 |
| Tritanopia (no blue cones) | #006972 | 0.088 |
| Achromatopsia (no color) | #585858 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0C5A99
#0C5A99
oklch(45.9% 0.123 249.8)
- #7B4C00
#7B4C00
oklch(46% 0.1 69.5)
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 #0C5A99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.036
- Peacock Blue #016795 ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.040
- Light Navy #155084 ΔE 0.041
- Cobalt #1E488F ΔE 0.051
- Denim #3B638C ΔE 0.052
Use #0C5A99 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.