#0A5491
Closest named color: Dusk Blue (#26538D). oklch(43.9% 0.12 250.3), rgb(10, 84, 145).
Aa
White text reads best on this color (7.80:1).
About this color
#0A5491 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.120 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.016 away. White text reads best on it, at 7.80:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.68:1 |
| White text | 7.80:1 |
Values
| HEX | #0A5491 |
| RGB | rgb(10, 84, 145) |
| HSL | hsl(207, 87%, 30%) |
| OKLCH | oklch(43.9% 0.12 250.3) |
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 #0A5491 | 7.80:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #0A5491 | 2.68:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #0A5491 text on white | 7.80:1 | AAA | Lc 86.6 | Fine for body text |
| #0A5491 text on black | 2.68:1 | Fails | Lc -15.5 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF3
oklch(88.6% 0.039 250.7)
-
Step 300
300
#9FC5ED
oklch(81% 0.07 250)
-
Step 400
400
#68A5E4
oklch(70.6% 0.113 250.4)
-
Step 500
500
#3B8DDC
oklch(63.1% 0.143 250.5)
-
Step 600
600
#0976CA
oklch(55.7% 0.155 250.2)
-
Step 700
700
#0062AC
oklch(49% 0.141 250.5)
-
Step 800
800 (this color)
#0A5491
oklch(43.9% 0.12 250.3)
-
Step 900
900
#124371
oklch(37.6% 0.094 250.8)
-
Step 950
950
#0D2842
oklch(27.1% 0.059 250.2)
#0A5491 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) | #355893 | 0.035 |
| Deuteranopia (no green cones) | #1E4D90 | 0.020 |
| Tritanopia (no blue cones) | #00636B | 0.088 |
| Achromatopsia (no color) | #525252 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A5491
#0A5491
oklch(43.9% 0.12 250.3)
- #734700
#734700
oklch(43.9% 0.095 69.8)
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 #0A5491, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.016
- Light Navy #155084 ΔE 0.022
- Deep Sea Blue #015482 ΔE 0.026
- Cobalt #1E488F ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.036
- Denim Blue #3B5B92 ΔE 0.045
- Peacock Blue #016795 ΔE 0.056
- Twilight Blue #0A437A ΔE 0.059
Use #0A5491 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.