#59AFF4
Closest named color: Deep Sky Blue (#00BFFF). oklch(73% 0.131 245.2), rgb(89, 175, 244).
Aa
Black text reads best on this color (8.86:1).
About this color
#59AFF4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.131 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.048 away. Black text reads best on it, at 8.86:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.86:1 |
| White text | 2.36:1 |
Values
| HEX | #59AFF4 |
| RGB | rgb(89, 175, 244) |
| HSL | hsl(207, 88%, 65%) |
| OKLCH | oklch(73% 0.131 245.2) |
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 #59AFF4 | 2.36:1 | Fails | Lc -51.4 | Large or bold text, headings |
| Black text on #59AFF4 | 8.86:1 | AAA | Lc 57.5 | Large or bold text, headings |
| #59AFF4 text on white | 2.36:1 | Fails | Lc 46.5 | Large or bold text, headings |
| #59AFF4 text on black | 8.86:1 | AAA | Lc -55.6 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DDECF9
oklch(93.6% 0.024 244.1)
-
Step 200
200
#C1DDF6
oklch(88.5% 0.046 245.3)
-
Step 300
300
#94C7F2
oklch(80.9% 0.081 244.5)
-
Step 400
400 (this color)
#59AFF4
oklch(73% 0.131 245.2)
-
Step 500
500
#0090E2
oklch(63.1% 0.159 245)
-
Step 600
600
#0079BF
oklch(55.7% 0.14 245)
-
Step 700
700
#0065A2
oklch(49% 0.125 245.5)
-
Step 800
800
#005386
oklch(42.8% 0.108 245.3)
-
Step 900
900
#004570
oklch(37.7% 0.095 244.9)
-
Step 950
950
#002945
oklch(27.1% 0.068 244.5)
#59AFF4 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) | #91B1F7 | 0.058 |
| Deuteranopia (no green cones) | #7BA2F3 | 0.044 |
| Tritanopia (no blue cones) | #00C0C7 | 0.100 |
| Achromatopsia (no color) | #A8A8A8 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59AFF4
#59AFF4
oklch(73% 0.131 245.2)
- #DF9544
#DF9544
oklch(72.9% 0.131 65.4)
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 #59AFF4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.048
- Carolina Blue #8AB8FE ΔE 0.058
- Cornflower Blue #6495ED ΔE 0.068
- Vivid Sky Blue #4CC9F0 ΔE 0.073
- Chefchaouen Blue #4895EF ΔE 0.074
- Bright Sky Blue #02CCFE ΔE 0.077
- Periwinkle Blue #8F99FB ΔE 0.078
- Lightblue #7BC8F6 ΔE 0.079
Use #59AFF4 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.