#0A4495
Closest named color: Cobalt (#1E488F). oklch(40.4% 0.145 258.8), rgb(10, 68, 149).
Aa
White text reads best on this color (9.23:1).
About this color
#0A4495 is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.145 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.021 away. White text reads best on it, at 9.23:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.27:1 |
| White text | 9.23:1 |
Values
| HEX | #0A4495 |
| RGB | rgb(10, 68, 149) |
| HSL | hsl(215, 87%, 31%) |
| OKLCH | oklch(40.4% 0.145 258.8) |
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 #0A4495 | 9.23:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #0A4495 | 2.27:1 | Fails | Lc 13.3 | Not readable |
| #0A4495 text on white | 9.23:1 | AAA | Lc 90.6 | Preferred for body text |
| #0A4495 text on black | 2.27:1 | Fails | Lc -11.7 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C7DBF9
oklch(88.6% 0.047 258.4)
-
Step 300
300
#A0C2F8
oklch(80.9% 0.085 259.5)
-
Step 400
400
#6BA1F4
oklch(70.7% 0.135 258.7)
-
Step 500
500
#4287F0
oklch(63.2% 0.173 258.7)
-
Step 600
600
#206DDF
oklch(55.6% 0.189 259)
-
Step 700
700
#115BC1
oklch(49.2% 0.174 258.6)
-
Step 800
800 (this color)
#0A4495
oklch(40.4% 0.145 258.8)
-
Step 900
900
#173F7C
oklch(37.6% 0.113 258.9)
-
Step 950
950
#0F2649
oklch(27.2% 0.071 258.7)
#0A4495 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) | #004E98 | 0.027 |
| Deuteranopia (no green cones) | #004293 | 0.008 |
| Tritanopia (no blue cones) | #005865 | 0.110 |
| Achromatopsia (no color) | #474747 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A4495
#0A4495
oklch(40.4% 0.145 258.8)
- #614200
#614200
oklch(40.4% 0.084 78.4)
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 #0A4495, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.021
- Twilight Blue #0A437A ΔE 0.045
- Sapphire #2138AB ΔE 0.047
- Light Navy #155084 ΔE 0.048
- Dusk Blue #26538D ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.060
- Blueberry #464196 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.067
Use #0A4495 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.