#57939B
Closest named color: Cadet Blue (#5F9EA0). oklch(62.6% 0.063 206.6), rgb(87, 147, 155).
Aa
Black text reads best on this color (6.05:1).
About this color
#57939B is a medium-light, muted teal or cyan. In OKLCH its lightness is 63%, its chroma 0.063 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.034 away. Black text reads best on it, at 6.05:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.05:1 |
| White text | 3.46:1 |
Values
| HEX | #57939B |
| RGB | rgb(87, 147, 155) |
| HSL | hsl(187, 28%, 47%) |
| OKLCH | oklch(62.6% 0.063 206.6) |
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 #57939B | 3.46:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #57939B | 6.05:1 | AA | Lc 41.9 | Non-text elements, placeholder text |
| #57939B text on white | 3.46:1 | AA large text | Lc 62.1 | Content text, not long reading |
| #57939B text on black | 6.05:1 | AA | Lc -39.5 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CDDDDF
oklch(88.6% 0.017 205.8)
-
Step 300
300
#AAC7CB
oklch(80.9% 0.032 206.7)
-
Step 400
400
#7CAAB0
oklch(70.7% 0.05 206.2)
-
Step 500
500 (this color)
#57939B
oklch(62.6% 0.063 206.6)
-
Step 600
600
#3C7F88
oklch(55.7% 0.069 207)
-
Step 700
700
#2D6B73
oklch(49.1% 0.064 206.8)
-
Step 800
800
#27575E
oklch(42.6% 0.053 208)
-
Step 900
900
#25484D
oklch(37.7% 0.041 207.5)
-
Step 950
950
#162A2D
oklch(26.9% 0.026 207.9)
#57939B 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) | #8A8F9C | 0.062 |
| Deuteranopia (no green cones) | #7F869B | 0.058 |
| Tritanopia (no blue cones) | #379895 | 0.032 |
| Achromatopsia (no color) | #8A8A8A | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57939B
#57939B
oklch(62.6% 0.063 206.6)
- #AB7973
#AB7973
oklch(62.5% 0.064 26.7)
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 #57939B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.034
- Sea #3C9992 ΔE 0.034
- Dusty Teal #4C9085 ΔE 0.036
- Grey Teal #5E9B8A ΔE 0.041
- Blue Grey #758DA3 ΔE 0.041
- Dull Teal #5F9E8F ΔE 0.043
- Light Slate Gray #778899 ΔE 0.045
- Teal Green #0A9396 ΔE 0.046
Use #57939B 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.