#59B7EB
Closest named color: Deep Sky Blue (#00BFFF). oklch(74.3% 0.116 235.6), rgb(89, 183, 235).
Aa
Black text reads best on this color (9.39:1).
About this color
#59B7EB is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.116 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.040 away. Black text reads best on it, at 9.39:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.39:1 |
| White text | 2.23:1 |
Values
| HEX | #59B7EB |
| RGB | rgb(89, 183, 235) |
| HSL | hsl(201, 78%, 64%) |
| OKLCH | oklch(74.3% 0.116 235.6) |
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 #59B7EB | 2.23:1 | Fails | Lc -48.6 | Large or bold text, headings |
| Black text on #59B7EB | 9.39:1 | AAA | Lc 60.2 | Content text, not long reading |
| #59B7EB text on white | 2.23:1 | Fails | Lc 43.8 | Non-text elements, placeholder text |
| #59B7EB text on black | 9.39:1 | AAA | Lc -58.4 | 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
#F0F7FB
oklch(97.2% 0.009 232.4)
-
Step 100
100
#DDECF6
oklch(93.5% 0.021 236.8)
-
Step 200
200
#C1DEF1
oklch(88.5% 0.04 236.7)
-
Step 300
300
#93C9E9
oklch(81% 0.072 234.8)
-
Step 400
400 (this color)
#59B7EB
oklch(74.3% 0.116 235.6)
-
Step 500
500
#0094CF
oklch(63% 0.135 235.8)
-
Step 600
600
#007DAF
oklch(55.7% 0.119 235.4)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#00567A
oklch(42.8% 0.091 235.4)
-
Step 900
900
#004766
oklch(37.6% 0.081 235.8)
-
Step 950
950
#002A3E
oklch(26.9% 0.057 235.2)
#59B7EB 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) | #9EB6ED | 0.071 |
| Deuteranopia (no green cones) | #8AA7EA | 0.060 |
| Tritanopia (no blue cones) | #00C5C8 | 0.082 |
| Achromatopsia (no color) | #ADADAD | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59B7EB
#59B7EB
oklch(74.3% 0.116 235.6)
- #E49861
#E49861
oklch(74.4% 0.116 55.8)
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 #59B7EB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.040
- Vivid Sky Blue #4CC9F0 ΔE 0.048
- Carolina Blue #8AB8FE ΔE 0.057
- Bright Sky Blue #02CCFE ΔE 0.058
- Lightblue #7BC8F6 ΔE 0.059
- Sky #82CAFC ΔE 0.069
- Turquoise Blue #06B1C4 ΔE 0.073
- Light Cornflower Blue #98C1D9 ΔE 0.077
Use #59B7EB 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.