#59AAEF
Closest named color: Cornflower Blue (#6495ED). oklch(71.6% 0.129 246.6), rgb(89, 170, 239).
Aa
Black text reads best on this color (8.42:1).
About this color
#59AAEF is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.129 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.056 away. Black text reads best on it, at 8.42:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 8.42:1 |
| White text | 2.49:1 |
Values
| HEX | #59AAEF |
| RGB | rgb(89, 170, 239) |
| HSL | hsl(208, 82%, 64%) |
| OKLCH | oklch(71.6% 0.129 246.6) |
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 #59AAEF | 2.49:1 | Fails | Lc -53.8 | Large or bold text, headings |
| Black text on #59AAEF | 8.42:1 | AAA | Lc 55.3 | Large or bold text, headings |
| #59AAEF text on white | 2.49:1 | Fails | Lc 48.7 | Large or bold text, headings |
| #59AAEF text on black | 8.42:1 | AAA | Lc -53.2 | 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
#C2DDF6
oklch(88.6% 0.045 246.3)
-
Step 300
300
#96C6F2
oklch(80.8% 0.08 246.6)
-
Step 400
400 (this color)
#59AAEF
oklch(71.6% 0.129 246.6)
-
Step 500
500
#008FE6
oklch(63.1% 0.164 246.6)
-
Step 600
600
#0078C2
oklch(55.6% 0.145 246.5)
-
Step 700
700
#0065A4
oklch(49.2% 0.127 246.3)
-
Step 800
800
#005288
oklch(42.7% 0.112 246.9)
-
Step 900
900
#004472
oklch(37.6% 0.099 246.8)
-
Step 950
950
#022845
oklch(26.9% 0.068 246.8)
#59AAEF 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) | #8CACF2 | 0.054 |
| Deuteranopia (no green cones) | #779DEE | 0.042 |
| Tritanopia (no blue cones) | #00BAC2 | 0.099 |
| Achromatopsia (no color) | #A4A4A4 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59AAEF
#59AAEF
oklch(71.6% 0.129 246.6)
- #D99240
#D99240
oklch(71.6% 0.129 66.7)
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 #59AAEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.056
- Deep Sky Blue #00BFFF ΔE 0.059
- Chefchaouen Blue #4895EF ΔE 0.061
- Carolina Blue #8AB8FE ΔE 0.068
- Periwinkle Blue #8F99FB ΔE 0.074
- Dark Sky Blue #448EE4 ΔE 0.080
- Turquoise Blue #06B1C4 ΔE 0.084
- Greyblue #77A1B5 ΔE 0.084
Use #59AAEF 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.