#0F59A1
Closest named color: Dusk Blue (#26538D). oklch(46.3% 0.134 253.1), rgb(15, 89, 161).
Aa
White text reads best on this color (7.08:1).
About this color
#0F59A1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.134 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.035 away. White text reads best on it, at 7.08:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.96:1 |
| White text | 7.08:1 |
Values
| HEX | #0F59A1 |
| RGB | rgb(15, 89, 161) |
| HSL | hsl(210, 83%, 35%) |
| OKLCH | oklch(46.3% 0.134 253.1) |
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 #0F59A1 | 7.08:1 | AAA | Lc -89.0 | Fine for body text |
| Black text on #0F59A1 | 2.96:1 | Fails | Lc 20.0 | Dividers and decoration only |
| #0F59A1 text on white | 7.08:1 | AAA | Lc 84.0 | Fine for body text |
| #0F59A1 text on black | 2.96:1 | Fails | Lc -17.9 | 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
#C9DBF1
oklch(88.5% 0.036 253.5)
-
Step 300
300
#A3C4EA
oklch(80.9% 0.065 252.2)
-
Step 400
400
#71A4E0
oklch(70.7% 0.104 253.2)
-
Step 500
500
#498CD7
oklch(63.1% 0.133 252.9)
-
Step 600
600
#2974C5
oklch(55.5% 0.145 253.4)
-
Step 700
700 (this color)
#0F59A1
oklch(46.3% 0.134 253.1)
-
Step 800
800
#19508A
oklch(42.8% 0.112 253)
-
Step 900
900
#1C436E
oklch(37.8% 0.086 253)
-
Step 950
950
#112740
oklch(26.9% 0.055 253.1)
#0F59A1 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) | #335FA4 | 0.033 |
| Deuteranopia (no green cones) | #1352A0 | 0.019 |
| Tritanopia (no blue cones) | #006A75 | 0.099 |
| Achromatopsia (no color) | #585858 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F59A1
#0F59A1
oklch(46.3% 0.134 253.1)
- #794F00
#794F00
oklch(46.3% 0.098 74)
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 #0F59A1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.035
- Denim Blue #3B5B92 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.045
- Peacock Blue #016795 ΔE 0.049
- Light Navy #155084 ΔE 0.051
- Cobalt #1E488F ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.052
- Dusky Blue #475F94 ΔE 0.057
Use #0F59A1 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.