#59BFFE
Closest named color: Deep Sky Blue (#00BFFF). oklch(77% 0.131 238.8), rgb(89, 191, 254).
Aa
Black text reads best on this color (10.30:1).
About this color
#59BFFE is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.131 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.032 away. Black text reads best on it, at 10.30:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 10.30:1 |
| White text | 2.03:1 |
Values
| HEX | #59BFFE |
| RGB | rgb(89, 191, 254) |
| HSL | hsl(203, 99%, 67%) |
| OKLCH | oklch(77% 0.131 238.8) |
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 #59BFFE | 2.03:1 | Fails | Lc -43.9 | Non-text elements, placeholder text |
| Black text on #59BFFE | 10.30:1 | AAA | Lc 64.6 | Content text, not long reading |
| #59BFFE text on white | 2.03:1 | Fails | Lc 39.4 | Non-text elements, placeholder text |
| #59BFFE text on black | 10.30:1 | AAA | Lc -63.0 | Content text, not long reading |
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 300.
-
Step 50
50
#ECF7FF
oklch(97% 0.016 239.1)
-
Step 100
100
#D6EEFF
oklch(93.7% 0.034 238.7)
-
Step 200
200
#B3E0FF
oklch(88.5% 0.064 238.5)
-
Step 300
300 (this color)
#59BFFE
oklch(77% 0.131 238.8)
-
Step 400
400
#00ACF8
oklch(70.8% 0.159 238.8)
-
Step 500
500
#0093D5
oklch(63.1% 0.142 238.9)
-
Step 600
600
#007BB4
oklch(55.5% 0.126 239.3)
-
Step 700
700
#006898
oklch(49.2% 0.11 238.7)
-
Step 800
800
#00557D
oklch(42.7% 0.096 238.5)
-
Step 900
900
#004769
oklch(37.8% 0.084 238.3)
-
Step 950
950
#002A41
oklch(27.1% 0.061 239)
#59BFFE 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) | #A2BFFF | 0.072 |
| Deuteranopia (no green cones) | #8BAEFD | 0.060 |
| Tritanopia (no blue cones) | #00CFD4 | 0.092 |
| Achromatopsia (no color) | #B6B6B6 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59BFFE
#59BFFE
oklch(77% 0.131 238.8)
- #F19E59
#F19E59
oklch(76.9% 0.131 58.8)
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 #59BFFE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.032
- Vivid Sky Blue #4CC9F0 ΔE 0.039
- Bright Sky Blue #02CCFE ΔE 0.043
- Lightblue #7BC8F6 ΔE 0.043
- Carolina Blue #8AB8FE ΔE 0.046
- Sky #82CAFC ΔE 0.050
- Light Sky Blue #87CEFA ΔE 0.062
- Sky Blue #87CEEB ΔE 0.070
Use #59BFFE 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.