#55A1BB
Closest named color: Greyblue (#77A1B5). oklch(67% 0.084 222.7), rgb(85, 161, 187).
Aa
Black text reads best on this color (7.20:1).
About this color
#55A1BB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.084 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.035 away. Black text reads best on it, at 7.20:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.20:1 |
| White text | 2.91:1 |
Values
| HEX | #55A1BB |
| RGB | rgb(85, 161, 187) |
| HSL | hsl(195, 43%, 53%) |
| OKLCH | oklch(67% 0.084 222.7) |
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 #55A1BB | 2.91:1 | Fails | Lc -60.7 | Content text, not long reading |
| Black text on #55A1BB | 7.20:1 | AAA | Lc 48.7 | Large or bold text, headings |
| #55A1BB text on white | 2.91:1 | Fails | Lc 55.4 | Large or bold text, headings |
| #55A1BB text on black | 7.20:1 | AAA | Lc -46.4 | 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
#F1F7F9
oklch(97.2% 0.007 219.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C5DEE7
oklch(88.5% 0.029 221.4)
-
Step 300
300
#9CC9DA
oklch(81% 0.053 223)
-
Step 400
400 (this color)
#55A1BB
oklch(67% 0.084 222.7)
-
Step 500
500
#2597B9
oklch(63.1% 0.108 223.2)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950
#072B36
oklch(27% 0.044 222.7)
#55A1BB 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) | #929EBC | 0.068 |
| Deuteranopia (no green cones) | #8392BB | 0.062 |
| Tritanopia (no blue cones) | #00A9A9 | 0.056 |
| Achromatopsia (no color) | #979797 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55A1BB
#55A1BB
oklch(67% 0.084 222.7)
- #C2846C
#C2846C
oklch(67% 0.084 42)
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 #55A1BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.035
- Cadet Blue #5F9EA0 ΔE 0.039
- Turquoise Blue #06B1C4 ΔE 0.050
- Bluegrey #85A3B2 ΔE 0.053
- Bluey Grey #89A0B0 ΔE 0.056
- Faded Blue #658CBB ΔE 0.060
- Silver Lake Blue #778DA9 ΔE 0.060
- Blue Grey #758DA3 ΔE 0.061
Use #55A1BB 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.