#59ACD2
Closest named color: Turquoise Blue (#06B1C4). oklch(70.7% 0.098 230), rgb(89, 172, 210).
Aa
Black text reads best on this color (8.25:1).
About this color
#59ACD2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.098 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.047 away. Black text reads best on it, at 8.25:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.25:1 |
| White text | 2.54:1 |
Values
| HEX | #59ACD2 |
| RGB | rgb(89, 172, 210) |
| HSL | hsl(199, 57%, 59%) |
| OKLCH | oklch(70.7% 0.098 230) |
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 #59ACD2 | 2.54:1 | Fails | Lc -54.7 | Large or bold text, headings |
| Black text on #59ACD2 | 8.25:1 | AAA | Lc 54.4 | Large or bold text, headings |
| #59ACD2 text on white | 2.54:1 | Fails | Lc 49.6 | Large or bold text, headings |
| #59ACD2 text on black | 8.25:1 | AAA | Lc -52.3 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DFECF4
oklch(93.6% 0.018 234.5)
-
Step 200
200
#C3DEEC
oklch(88.5% 0.035 230.3)
-
Step 300
300
#98C9E1
oklch(81% 0.061 229.5)
-
Step 400
400 (this color)
#59ACD2
oklch(70.7% 0.098 230)
-
Step 500
500
#0496C6
oklch(63.1% 0.125 230.1)
-
Step 600
600
#007EA7
oklch(55.5% 0.111 230)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800
#005774
oklch(42.7% 0.085 229.4)
-
Step 900
900
#004862
oklch(37.7% 0.076 230.8)
-
Step 950
950
#022B3B
oklch(27.1% 0.052 229.7)
#59ACD2 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) | #99AAD4 | 0.069 |
| Deuteranopia (no green cones) | #889DD1 | 0.060 |
| Tritanopia (no blue cones) | #00B7B8 | 0.068 |
| Achromatopsia (no color) | #A2A2A2 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59ACD2
#59ACD2
oklch(70.7% 0.098 230)
- #D28E68
#D28E68
oklch(70.6% 0.098 49.8)
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 #59ACD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.047
- Greyblue #77A1B5 ΔE 0.049
- Bluegrey #85A3B2 ΔE 0.059
- Bluey Grey #89A0B0 ΔE 0.065
- Deep Sky Blue #00BFFF ΔE 0.074
- Cadet Blue #5F9EA0 ΔE 0.074
- Cool Steel #97A7B3 ΔE 0.074
- Cool Gray #8D99AE ΔE 0.076
Use #59ACD2 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.