#55AADB
Closest named color: Turquoise Blue (#06B1C4). oklch(70.5% 0.109 236.5), rgb(85, 170, 219).
Aa
Black text reads best on this color (8.15:1).
About this color
#55AADB is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.109 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.057 away. Black text reads best on it, at 8.15:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.15:1 |
| White text | 2.57:1 |
Values
| HEX | #55AADB |
| RGB | rgb(85, 170, 219) |
| HSL | hsl(202, 65%, 60%) |
| OKLCH | oklch(70.5% 0.109 236.5) |
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 #55AADB | 2.57:1 | Fails | Lc -55.2 | Large or bold text, headings |
| Black text on #55AADB | 8.15:1 | AAA | Lc 53.9 | Large or bold text, headings |
| #55AADB text on white | 2.57:1 | Fails | Lc 50.1 | Large or bold text, headings |
| #55AADB text on black | 8.15:1 | AAA | Lc -51.8 | 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
#F0F7FB
oklch(97.2% 0.009 232.4)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C2DEEF
oklch(88.5% 0.038 234.5)
-
Step 300
300
#97C8E7
oklch(80.9% 0.068 236.5)
-
Step 400
400 (this color)
#55AADB
oklch(70.5% 0.109 236.5)
-
Step 500
500
#0094D1
oklch(63.1% 0.137 236.6)
-
Step 600
600
#007CB0
oklch(55.5% 0.121 236.7)
-
Step 700
700
#006895
oklch(49% 0.107 237)
-
Step 800
800
#00557B
oklch(42.6% 0.093 237.2)
-
Step 900
900
#004767
oklch(37.7% 0.082 236.6)
-
Step 950
950
#012A3F
oklch(27% 0.058 237)
#55AADB 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) | #93A9DD | 0.065 |
| Deuteranopia (no green cones) | #819BDA | 0.056 |
| Tritanopia (no blue cones) | #00B7BA | 0.078 |
| Achromatopsia (no color) | #A1A1A1 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55AADB
#55AADB
oklch(70.5% 0.109 236.5)
- #D48E5A
#D48E5A
oklch(70.6% 0.109 56.5)
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 #55AADB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.057
- Greyblue #77A1B5 ΔE 0.059
- Deep Sky Blue #00BFFF ΔE 0.068
- Cornflower Blue #6495ED ΔE 0.069
- Bluegrey #85A3B2 ΔE 0.070
- Chefchaouen Blue #4895EF ΔE 0.073
- Bluey Grey #89A0B0 ΔE 0.075
- Vivid Sky Blue #4CC9F0 ΔE 0.083
Use #55AADB 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.