#59C4DB
Closest named color: Vivid Sky Blue (#4CC9F0). oklch(76.6% 0.103 214), rgb(89, 196, 219).
Aa
Black text reads best on this color (10.34:1).
About this color
#59C4DB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.103 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Sky Blue (#4CC9F0), ΔE 0.029 away. Black text reads best on it, at 10.34:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Vivid Sky Blue (#4CC9F0) |
| Black text | 10.34:1 |
| White text | 2.03:1 |
Values
| HEX | #59C4DB |
| RGB | rgb(89, 196, 219) |
| HSL | hsl(191, 64%, 60%) |
| OKLCH | oklch(76.6% 0.103 214) |
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 #59C4DB | 2.03:1 | Fails | Lc -43.7 | Non-text elements, placeholder text |
| Black text on #59C4DB | 10.34:1 | AAA | Lc 64.7 | Content text, not long reading |
| #59C4DB text on white | 2.03:1 | Fails | Lc 39.2 | Non-text elements, placeholder text |
| #59C4DB text on black | 10.34:1 | AAA | Lc -63.1 | 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
#ECF8FB
oklch(97.1% 0.013 214.4)
-
Step 100
100
#D4F0F6
oklch(93.7% 0.03 212)
-
Step 200
200
#AEE4F0
oklch(88.6% 0.058 212.8)
-
Step 300
300 (this color)
#59C4DB
oklch(76.6% 0.103 214)
-
Step 400
400
#00B4D0
oklch(70.8% 0.124 214)
-
Step 500
500
#009AB2
oklch(63.1% 0.111 213.9)
-
Step 600
600
#008196
oklch(55.5% 0.098 214.4)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900
#004A57
oklch(37.6% 0.066 214.5)
-
Step 950
950
#002C34
oklch(26.9% 0.047 213.2)
#59C4DB 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) | #B3BEDC | 0.093 |
| Deuteranopia (no green cones) | #A0B0DB | 0.085 |
| Tritanopia (no blue cones) | #00CDCB | 0.050 |
| Achromatopsia (no color) | #B6B6B6 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59C4DB
#59C4DB
oklch(76.6% 0.103 214)
- #ED9B88
#ED9B88
oklch(76.7% 0.103 33.7)
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 #59C4DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Sky Blue #4CC9F0 ΔE 0.029
- Dark Turquoise #00CED1 ΔE 0.046
- Medium Turquoise #48D1CC ΔE 0.049
- Lightblue #7BC8F6 ΔE 0.052
- Bright Sky Blue #02CCFE ΔE 0.052
- Aqua Blue #02D8E9 ΔE 0.055
- Sky Blue #87CEEB ΔE 0.056
- Light Cornflower Blue #98C1D9 ΔE 0.059
Use #59C4DB 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.