#59ACEF
Closest named color: Deep Sky Blue (#00BFFF). oklch(72.1% 0.127 245.3), rgb(89, 172, 239).
Aa
Black text reads best on this color (8.57:1).
About this color
#59ACEF is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.127 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.055 away. Black text reads best on it, at 8.57:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.57:1 |
| White text | 2.44:1 |
Values
| HEX | #59ACEF |
| RGB | rgb(89, 172, 239) |
| HSL | hsl(207, 82%, 64%) |
| OKLCH | oklch(72.1% 0.127 245.3) |
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 #59ACEF | 2.44:1 | Fails | Lc -53.0 | Large or bold text, headings |
| Black text on #59ACEF | 8.57:1 | AAA | Lc 56.0 | Large or bold text, headings |
| #59ACEF text on white | 2.44:1 | Fails | Lc 48.0 | Large or bold text, headings |
| #59ACEF text on black | 8.57:1 | AAA | Lc -54.1 | 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
#DEECF9
oklch(93.6% 0.023 246)
-
Step 200
200
#C2DDF5
oklch(88.5% 0.044 245.1)
-
Step 300
300
#96C7F1
oklch(81% 0.079 244.9)
-
Step 400
400 (this color)
#59ACEF
oklch(72.1% 0.127 245.3)
-
Step 500
500
#0090E3
oklch(63.2% 0.16 245.3)
-
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
#012945
oklch(27.1% 0.067 245)
#59ACEF 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) | #8FAEF2 | 0.057 |
| Deuteranopia (no green cones) | #7A9FEE | 0.044 |
| Tritanopia (no blue cones) | #00BCC3 | 0.097 |
| Achromatopsia (no color) | #A5A5A5 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59ACEF
#59ACEF
oklch(72.1% 0.127 245.3)
- #DB9345
#DB9345
oklch(72.1% 0.127 65.3)
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 #59ACEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.055
- Cornflower Blue #6495ED ΔE 0.061
- Carolina Blue #8AB8FE ΔE 0.065
- Chefchaouen Blue #4895EF ΔE 0.067
- Periwinkle Blue #8F99FB ΔE 0.077
- Vivid Sky Blue #4CC9F0 ΔE 0.079
- Turquoise Blue #06B1C4 ΔE 0.082
- Greyblue #77A1B5 ΔE 0.084
Use #59ACEF 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.