#59BEFB
Closest named color: Deep Sky Blue (#00BFFF). oklch(76.6% 0.128 238.2), rgb(89, 190, 251).
Aa
Black text reads best on this color (10.18:1).
About this color
#59BEFB is a medium-light, moderately saturated blue. In OKLCH its lightness is 77%, its chroma 0.128 and its hue 238°. 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 10.18:1.
| Hue family | Blues |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 10.18:1 |
| White text | 2.06:1 |
Values
| HEX | #59BEFB |
| RGB | rgb(89, 190, 251) |
| HSL | hsl(203, 95%, 67%) |
| OKLCH | oklch(76.6% 0.128 238.2) |
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 #59BEFB | 2.06:1 | Fails | Lc -44.5 | Non-text elements, placeholder text |
| Black text on #59BEFB | 10.18:1 | AAA | Lc 64.0 | Content text, not long reading |
| #59BEFB text on white | 2.06:1 | Fails | Lc 40.0 | Non-text elements, placeholder text |
| #59BEFB text on black | 10.18:1 | AAA | Lc -62.4 | 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
#D5EEFF
oklch(93.6% 0.035 237.5)
-
Step 200
200
#B2E0FF
oklch(88.5% 0.064 237.9)
-
Step 300
300 (this color)
#59BEFB
oklch(76.6% 0.128 238.2)
-
Step 400
400
#00ACF6
oklch(70.7% 0.157 238.1)
-
Step 500
500
#0093D4
oklch(63% 0.141 238.5)
-
Step 600
600
#007CB3
oklch(55.7% 0.124 238.2)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
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
#002A40
oklch(27% 0.06 237.8)
#59BEFB 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) | #A2BEFE | 0.073 |
| Deuteranopia (no green cones) | #8BADFA | 0.060 |
| Tritanopia (no blue cones) | #00CED3 | 0.090 |
| Achromatopsia (no color) | #B4B4B4 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59BEFB
#59BEFB
oklch(76.6% 0.128 238.2)
- #F09D5B
#F09D5B
oklch(76.6% 0.129 57.7)
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 #59BEFB, 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 0.038
- Bright Sky Blue #02CCFE ΔE 0.043
- Lightblue #7BC8F6 ΔE 0.044
- Carolina Blue #8AB8FE ΔE 0.047
- Sky #82CAFC ΔE 0.052
- Light Sky Blue #87CEFA ΔE 0.064
- Sky Blue #87CEEB ΔE 0.071
Use #59BEFB 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.