#55ADDF
Closest named color: Turquoise Blue (#06B1C4). oklch(71.4% 0.112 236.2), rgb(85, 173, 223).
Aa
Black text reads best on this color (8.42:1).
About this color
#55ADDF is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.112 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.059 away. Black text reads best on it, at 8.42:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.42:1 |
| White text | 2.49:1 |
Values
| HEX | #55ADDF |
| RGB | rgb(85, 173, 223) |
| HSL | hsl(202, 68%, 60%) |
| OKLCH | oklch(71.4% 0.112 236.2) |
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 #55ADDF | 2.49:1 | Fails | Lc -53.7 | Large or bold text, headings |
| Black text on #55ADDF | 8.42:1 | AAA | Lc 55.3 | Large or bold text, headings |
| #55ADDF text on white | 2.49:1 | Fails | Lc 48.7 | Large or bold text, headings |
| #55ADDF text on black | 8.42:1 | AAA | Lc -53.3 | 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
#F0F7FB
oklch(97.2% 0.009 232.4)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C2DEF0
oklch(88.6% 0.039 236.1)
-
Step 300
300
#95C8E8
oklch(80.8% 0.07 236.3)
-
Step 400
400 (this color)
#55ADDF
oklch(71.4% 0.112 236.2)
-
Step 500
500
#0094D0
oklch(63.1% 0.136 236.2)
-
Step 600
600
#007CB0
oklch(55.5% 0.121 236.7)
-
Step 700
700
#006894
oklch(49% 0.106 236.4)
-
Step 800
800
#00567A
oklch(42.8% 0.091 235.4)
-
Step 900
900
#004767
oklch(37.7% 0.082 236.6)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#55ADDF 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) | #95ACE1 | 0.067 |
| Deuteranopia (no green cones) | #829EDE | 0.056 |
| Tritanopia (no blue cones) | #00BABE | 0.078 |
| Achromatopsia (no color) | #A4A4A4 | 0.112 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55ADDF
#55ADDF
oklch(71.4% 0.112 236.2)
- #D8905B
#D8905B
oklch(71.5% 0.111 56.2)
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 #55ADDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.059
- Deep Sky Blue #00BFFF ΔE 0.060
- Greyblue #77A1B5 ΔE 0.065
- Cornflower Blue #6495ED ΔE 0.074
- Bluegrey #85A3B2 ΔE 0.074
- Vivid Sky Blue #4CC9F0 ΔE 0.075
- Carolina Blue #8AB8FE ΔE 0.077
- Chefchaouen Blue #4895EF ΔE 0.078
Use #55ADDF 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.