#59AAD5
Closest named color: Greyblue (#77A1B5). oklch(70.4% 0.101 233.9), rgb(89, 170, 213).
Aa
Black text reads best on this color (8.13:1).
About this color
#59AAD5 is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.101 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.051 away. Black text reads best on it, at 8.13:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 8.13:1 |
| White text | 2.58:1 |
Values
| HEX | #59AAD5 |
| RGB | rgb(89, 170, 213) |
| HSL | hsl(201, 60%, 59%) |
| OKLCH | oklch(70.4% 0.101 233.9) |
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 #59AAD5 | 2.58:1 | Fails | Lc -55.4 | Large or bold text, headings |
| Black text on #59AAD5 | 8.13:1 | AAA | Lc 53.7 | Large or bold text, headings |
| #59AAD5 text on white | 2.58:1 | Fails | Lc 50.3 | Large or bold text, headings |
| #59AAD5 text on black | 8.13:1 | AAA | Lc -51.7 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DFECF4
oklch(93.6% 0.018 234.5)
-
Step 200
200
#C3DEED
oklch(88.5% 0.035 232.1)
-
Step 300
300
#99C8E4
oklch(80.9% 0.063 234.7)
-
Step 400
400 (this color)
#59AAD5
oklch(70.4% 0.101 233.9)
-
Step 500
500
#0E95CB
oklch(63.1% 0.129 233.8)
-
Step 600
600
#007DAC
oklch(55.5% 0.116 233.8)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#004865
oklch(37.8% 0.079 233.7)
-
Step 950
950
#032A3C
oklch(26.9% 0.053 233.9)
#59AAD5 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) | #95A8D7 | 0.065 |
| Deuteranopia (no green cones) | #849BD4 | 0.057 |
| Tritanopia (no blue cones) | #00B5B8 | 0.072 |
| Achromatopsia (no color) | #A1A1A1 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #59AAD5
#59AAD5
oklch(70.4% 0.101 233.9)
- #D18E61
#D18E61
oklch(70.4% 0.102 54.2)
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 #59AAD5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.051
- Turquoise Blue #06B1C4 ΔE 0.052
- Bluegrey #85A3B2 ΔE 0.062
- Bluey Grey #89A0B0 ΔE 0.067
- Deep Sky Blue #00BFFF ΔE 0.073
- Cornflower Blue #6495ED ΔE 0.075
- Cool Gray #8D99AE ΔE 0.077
- Cadet Blue #5F9EA0 ΔE 0.077
Use #59AAD5 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.