#0859A3
Closest named color: Dusk Blue (#26538D). oklch(46.3% 0.138 253), rgb(8, 89, 163).
Aa
White text reads best on this color (7.07:1).
About this color
#0859A3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.138 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.038 away. White text reads best on it, at 7.07:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.96:1 |
| White text | 7.07:1 |
Values
| HEX | #0859A3 |
| RGB | rgb(8, 89, 163) |
| HSL | hsl(209, 91%, 34%) |
| OKLCH | oklch(46.3% 0.138 253) |
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 #0859A3 | 7.07:1 | AAA | Lc -88.9 | Fine for body text |
| Black text on #0859A3 | 2.96:1 | Fails | Lc 20.1 | Dividers and decoration only |
| #0859A3 text on white | 7.07:1 | AAA | Lc 83.9 | Fine for body text |
| #0859A3 text on black | 2.96:1 | Fails | Lc -18.0 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DBF2
oklch(88.4% 0.038 253.2)
-
Step 300
300
#A2C4EB
oklch(80.9% 0.066 252.1)
-
Step 400
400
#6FA4E2
oklch(70.7% 0.107 253.1)
-
Step 500
500
#478CD9
oklch(63.1% 0.136 252.9)
-
Step 600
600
#2574C7
oklch(55.5% 0.149 253.2)
-
Step 700
700 (this color)
#0859A3
oklch(46.3% 0.138 253)
-
Step 800
800
#16508B
oklch(42.8% 0.114 252.7)
-
Step 900
900
#1A436F
oklch(37.8% 0.088 252.6)
-
Step 950
950
#102741
oklch(26.9% 0.057 253.1)
#0859A3 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) | #315FA6 | 0.033 |
| Deuteranopia (no green cones) | #0B52A2 | 0.019 |
| Tritanopia (no blue cones) | #006B76 | 0.102 |
| Achromatopsia (no color) | #585858 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0859A3
#0859A3
oklch(46.3% 0.138 253)
- #7A4F00
#7A4F00
oklch(46.4% 0.099 73.2)
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 #0859A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.049
- Peacock Blue #016795 ΔE 0.051
- Light Navy #155084 ΔE 0.053
- Cobalt #1E488F ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.055
- Mid Blue #276AB3 ΔE 0.057
Use #0859A3 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.