#59AEC9
Closest named color: Turquoise Blue (#06B1C4). oklch(70.8% 0.091 221.2), rgb(89, 174, 201).
Aa
Black text reads best on this color (8.32:1).
About this color
#59AEC9 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.091 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.038 away. Black text reads best on it, at 8.32:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.32:1 |
| White text | 2.52:1 |
Values
| HEX | #59AEC9 |
| RGB | rgb(89, 174, 201) |
| HSL | hsl(194, 51%, 57%) |
| OKLCH | oklch(70.8% 0.091 221.2) |
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 #59AEC9 | 2.52:1 | Fails | Lc -54.4 | Large or bold text, headings |
| Black text on #59AEC9 | 8.32:1 | AAA | Lc 54.7 | Large or bold text, headings |
| #59AEC9 text on white | 2.52:1 | Fails | Lc 49.3 | Large or bold text, headings |
| #59AEC9 text on black | 8.32:1 | AAA | Lc -52.7 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFEDF2
oklch(93.7% 0.016 221.1)
-
Step 200
200
#C3DEE8
oklch(88.4% 0.032 222.1)
-
Step 300
300
#98CADB
oklch(81% 0.057 220.8)
-
Step 400
400 (this color)
#59AEC9
oklch(70.8% 0.091 221.2)
-
Step 500
500
#0099BB
oklch(63.2% 0.116 221)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#00495B
oklch(37.6% 0.069 221.4)
-
Step 950
950
#022B37
oklch(26.9% 0.048 222.6)
#59AEC9 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) | #9EAACA | 0.075 |
| Deuteranopia (no green cones) | #8D9EC9 | 0.067 |
| Tritanopia (no blue cones) | #00B7B6 | 0.057 |
| Achromatopsia (no color) | #A3A3A3 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59AEC9
#59AEC9
oklch(70.8% 0.091 221.2)
- #D28E75
#D28E75
oklch(70.9% 0.091 41)
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 #59AEC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.038
- Greyblue #77A1B5 ΔE 0.044
- Bluegrey #85A3B2 ΔE 0.053
- Bluey Grey #89A0B0 ΔE 0.060
- Light Sea Green #20B2AA ΔE 0.063
- Cadet Blue #5F9EA0 ΔE 0.064
- Cool Steel #97A7B3 ΔE 0.069
- Topaz #13BBAF ΔE 0.070
Use #59AEC9 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.