#59BBC8
Closest named color: Turquoise Blue (#06B1C4). oklch(73.8% 0.093 207), rgb(89, 187, 200).
Aa
Black text reads best on this color (9.36:1).
About this color
#59BBC8 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.093 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.050 away. Black text reads best on it, at 9.36:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 9.36:1 |
| White text | 2.24:1 |
Values
| HEX | #59BBC8 |
| RGB | rgb(89, 187, 200) |
| HSL | hsl(187, 50%, 57%) |
| OKLCH | oklch(73.8% 0.093 207) |
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 #59BBC8 | 2.24:1 | Fails | Lc -48.8 | Large or bold text, headings |
| Black text on #59BBC8 | 9.36:1 | AAA | Lc 60.0 | Large or bold text, headings |
| #59BBC8 text on white | 2.24:1 | Fails | Lc 44.0 | Non-text elements, placeholder text |
| #59BBC8 text on black | 9.36:1 | AAA | Lc -58.2 | 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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DEEDEF
oklch(93.6% 0.016 206.4)
-
Step 200
200
#C1E0E4
oklch(88.5% 0.033 206.1)
-
Step 300
300
#94CCD4
oklch(80.9% 0.059 207.1)
-
Step 400
400 (this color)
#59BBC8
oklch(73.8% 0.093 207)
-
Step 500
500
#009BAA
oklch(63% 0.108 206.9)
-
Step 600
600
#00838F
oklch(55.7% 0.095 206.1)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950
#002D32
oklch(27.1% 0.046 206.3)
#59BBC8 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) | #ADB5C9 | 0.090 |
| Deuteranopia (no green cones) | #9CA8C8 | 0.083 |
| Tritanopia (no blue cones) | #00C2BF | 0.042 |
| Achromatopsia (no color) | #ADADAD | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59BBC8
#59BBC8
oklch(73.8% 0.093 207)
- #DF938A
#DF938A
oklch(73.7% 0.094 27)
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 #59BBC8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.050
- Topaz #13BBAF ΔE 0.054
- Dark Turquoise #00CED1 ΔE 0.055
- Vivid Sky Blue #4CC9F0 ΔE 0.060
- Medium Turquoise #48D1CC ΔE 0.060
- Light Sea Green #20B2AA ΔE 0.061
- Greyblue #77A1B5 ΔE 0.071
- Bluegrey #85A3B2 ΔE 0.071
Use #59BBC8 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.