#57A3BB
Closest named color: Greyblue (#77A1B5). oklch(67.6% 0.083 220.8), rgb(87, 163, 187).
Aa
Black text reads best on this color (7.36:1).
About this color
#57A3BB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 68%, its chroma 0.083 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.032 away. Black text reads best on it, at 7.36:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.36:1 |
| White text | 2.85:1 |
Values
| HEX | #57A3BB |
| RGB | rgb(87, 163, 187) |
| HSL | hsl(194, 42%, 54%) |
| OKLCH | oklch(67.6% 0.083 220.8) |
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 #57A3BB | 2.85:1 | Fails | Lc -59.8 | Large or bold text, headings |
| Black text on #57A3BB | 7.36:1 | AAA | Lc 49.6 | Large or bold text, headings |
| #57A3BB text on white | 2.85:1 | Fails | Lc 54.5 | Large or bold text, headings |
| #57A3BB text on black | 7.36:1 | AAA | Lc -47.3 | 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
#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
#9CC9D8
oklch(80.9% 0.052 220.3)
-
Step 400
400 (this color)
#57A3BB
oklch(67.6% 0.083 220.8)
-
Step 500
500
#2598B6
oklch(63.2% 0.106 220.2)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#00495B
oklch(37.6% 0.069 221.4)
-
Step 950
950
#072B35
oklch(26.9% 0.043 220.5)
#57A3BB 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) | #949FBC | 0.069 |
| Deuteranopia (no green cones) | #8694BB | 0.063 |
| Tritanopia (no blue cones) | #09ABAB | 0.053 |
| Achromatopsia (no color) | #999999 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57A3BB
#57A3BB
oklch(67.6% 0.083 220.8)
- #C3866F
#C3866F
oklch(67.6% 0.083 41.5)
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 #57A3BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.032
- Cadet Blue #5F9EA0 ΔE 0.038
- Turquoise Blue #06B1C4 ΔE 0.047
- Bluegrey #85A3B2 ΔE 0.049
- Bluey Grey #89A0B0 ΔE 0.054
- Cool Gray #8D99AE ΔE 0.062
- Dull Teal #5F9E8F ΔE 0.063
- Light Sea Green #20B2AA ΔE 0.064
Use #57A3BB 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.