#59AEEF
Closest named color: Deep Sky Blue (#00BFFF). oklch(72.5% 0.126 243.9), rgb(89, 174, 239).
Aa
Black text reads best on this color (8.72:1).
About this color
#59AEEF is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.126 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.051 away. Black text reads best on it, at 8.72:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.72:1 |
| White text | 2.40:1 |
Values
| HEX | #59AEEF |
| RGB | rgb(89, 174, 239) |
| HSL | hsl(206, 82%, 64%) |
| OKLCH | oklch(72.5% 0.126 243.9) |
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 #59AEEF | 2.40:1 | Fails | Lc -52.1 | Large or bold text, headings |
| Black text on #59AEEF | 8.72:1 | AAA | Lc 56.8 | Large or bold text, headings |
| #59AEEF text on white | 2.40:1 | Fails | Lc 47.2 | Large or bold text, headings |
| #59AEEF text on black | 8.72:1 | AAA | Lc -54.9 | 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
#DEECF8
oklch(93.6% 0.022 243.8)
-
Step 200
200
#C2DDF4
oklch(88.5% 0.043 244)
-
Step 300
300
#95C7F0
oklch(80.9% 0.078 243.7)
-
Step 400
400 (this color)
#59AEEF
oklch(72.5% 0.126 243.9)
-
Step 500
500
#0091DF
oklch(63.2% 0.154 243.6)
-
Step 600
600
#0079BD
oklch(55.5% 0.138 244.2)
-
Step 700
700
#00669F
oklch(49.1% 0.12 243.6)
-
Step 800
800
#005384
oklch(42.6% 0.106 244.3)
-
Step 900
900
#00456F
oklch(37.6% 0.093 244.3)
-
Step 950
950
#002944
oklch(27% 0.066 243.6)
#59AEEF 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) | #91AFF2 | 0.058 |
| Deuteranopia (no green cones) | #7DA0EE | 0.047 |
| Tritanopia (no blue cones) | #00BEC5 | 0.094 |
| Achromatopsia (no color) | #A7A7A7 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59AEEF
#59AEEF
oklch(72.5% 0.126 243.9)
- #DD9449
#DD9449
oklch(72.6% 0.126 64.1)
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 #59AEEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.051
- Carolina Blue #8AB8FE ΔE 0.062
- Cornflower Blue #6495ED ΔE 0.066
- Chefchaouen Blue #4895EF ΔE 0.072
- Vivid Sky Blue #4CC9F0 ΔE 0.074
- Bright Sky Blue #02CCFE ΔE 0.080
- Periwinkle Blue #8F99FB ΔE 0.080
- Turquoise Blue #06B1C4 ΔE 0.080
Use #59AEEF 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.