#55BBCB
Closest named color: Turquoise Blue (#06B1C4). oklch(73.8% 0.097 209.1), rgb(85, 187, 203).
Aa
Black text reads best on this color (9.35:1).
About this color
#55BBCB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.097 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.048 away. Black text reads best on it, at 9.35:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 9.35:1 |
| White text | 2.24:1 |
Values
| HEX | #55BBCB |
| RGB | rgb(85, 187, 203) |
| HSL | hsl(188, 53%, 56%) |
| OKLCH | oklch(73.8% 0.097 209.1) |
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 #55BBCB | 2.24:1 | Fails | Lc -48.8 | Large or bold text, headings |
| Black text on #55BBCB | 9.35:1 | AAA | Lc 60.0 | Large or bold text, headings |
| #55BBCB text on white | 2.24:1 | Fails | Lc 44.0 | Non-text elements, placeholder text |
| #55BBCB text on black | 9.35:1 | AAA | Lc -58.1 | 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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DDEDF0
oklch(93.5% 0.017 210.2)
-
Step 200
200
#C1E0E5
oklch(88.6% 0.033 208.4)
-
Step 300
300
#93CCD6
oklch(80.9% 0.06 209.5)
-
Step 400
400 (this color)
#55BBCB
oklch(73.8% 0.097 209.1)
-
Step 500
500
#009BAD
oklch(63.1% 0.109 209.2)
-
Step 600
600
#008291
oklch(55.5% 0.096 208.9)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950
#002C33
oklch(26.9% 0.047 211.1)
#55BBCB 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) | #ACB5CC | 0.092 |
| Deuteranopia (no green cones) | #9AA7CB | 0.085 |
| Tritanopia (no blue cones) | #00C3C0 | 0.043 |
| Achromatopsia (no color) | #ADADAD | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55BBCB
#55BBCB
oklch(73.8% 0.097 209.1)
- #E19387
#E19387
oklch(73.9% 0.097 29.1)
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 #55BBCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.048
- Dark Turquoise #00CED1 ΔE 0.054
- Topaz #13BBAF ΔE 0.055
- Vivid Sky Blue #4CC9F0 ΔE 0.057
- Medium Turquoise #48D1CC ΔE 0.062
- Light Sea Green #20B2AA ΔE 0.062
- Greyblue #77A1B5 ΔE 0.072
- Bluegrey #85A3B2 ΔE 0.073
Use #55BBCB 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.