#59C9D3
Closest named color: Medium Turquoise (#48D1CC). oklch(77.5% 0.102 203.3), rgb(89, 201, 211).
Aa
Black text reads best on this color (10.72:1).
About this color
#59C9D3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 78%, its chroma 0.102 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.029 away. Black text reads best on it, at 10.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 10.72:1 |
| White text | 1.95:1 |
Values
| HEX | #59C9D3 |
| RGB | rgb(89, 201, 211) |
| HSL | hsl(185, 58%, 59%) |
| OKLCH | oklch(77.5% 0.102 203.3) |
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 #59C9D3 | 1.95:1 | Fails | Lc -41.8 | Non-text elements, placeholder text |
| Black text on #59C9D3 | 10.72:1 | AAA | Lc 66.4 | Content text, not long reading |
| #59C9D3 text on white | 1.95:1 | Fails | Lc 37.5 | Non-text elements, placeholder text |
| #59C9D3 text on black | 10.72:1 | AAA | Lc -65.0 | 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
#ECF8F9
oklch(97% 0.013 202.9)
-
Step 100
100
#D4F0F3
oklch(93.6% 0.03 204.5)
-
Step 200
200
#AEE5EA
oklch(88.6% 0.056 203.2)
-
Step 300
300 (this color)
#59C9D3
oklch(77.5% 0.102 203.3)
-
Step 400
400
#00B6C2
oklch(70.7% 0.12 203.2)
-
Step 500
500
#009CA6
oklch(63.1% 0.107 202.8)
-
Step 600
600
#00838C
oklch(55.6% 0.095 203.3)
-
Step 700
700
#006E76
oklch(49.1% 0.084 203.6)
-
Step 800
800
#005A61
oklch(42.6% 0.073 204)
-
Step 900
900
#004B51
oklch(37.6% 0.064 204)
-
Step 950
950
#002D30
oklch(27% 0.046 201.8)
#59C9D3 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) | #BBC1D4 | 0.102 |
| Deuteranopia (no green cones) | #A8B3D4 | 0.095 |
| Tritanopia (no blue cones) | #00D0CC | 0.038 |
| Achromatopsia (no color) | #B9B9B9 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59C9D3
#59C9D3
oklch(77.5% 0.102 203.3)
- #F09C97
#F09C97
oklch(77.5% 0.101 23.4)
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 #59C9D3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.029
- Dark Turquoise #00CED1 ΔE 0.032
- Vivid Sky Blue #4CC9F0 ΔE 0.042
- Aqua Blue #02D8E9 ΔE 0.046
- Pale Teal #82CBB2 ΔE 0.057
- Sky Blue #87CEEB ΔE 0.057
- Seafoam Blue #78D1B6 ΔE 0.058
- Lightblue #7BC8F6 ΔE 0.062
Use #59C9D3 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.