#577C83
Closest named color: Grey Blue (#647D8E). oklch(56.1% 0.043 210.6), rgb(87, 124, 131).
Aa
Black text reads best on this color (4.61:1).
About this color
#577C83 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 56%, its chroma 0.043 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.025 away. Black text reads best on it, at 4.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.61:1 |
| White text | 4.54:1 |
Values
| HEX | #577C83 |
| RGB | rgb(87, 124, 131) |
| HSL | hsl(190, 20%, 43%) |
| OKLCH | oklch(56.1% 0.043 210.6) |
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 #577C83 | 4.54:1 | AA | Lc -77.0 | Fine for body text |
| Black text on #577C83 | 4.61:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #577C83 text on white | 4.54:1 | AA | Lc 71.6 | Content text, not long reading |
| #577C83 text on black | 4.61:1 | AA | Lc -30.1 | 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 600.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDD
oklch(88.5% 0.01 212.5)
-
Step 300
300
#B3C4C8
oklch(80.9% 0.019 213.4)
-
Step 400
400
#8BA6AB
oklch(70.6% 0.031 210.1)
-
Step 500
500
#6E9097
oklch(63% 0.039 211.7)
-
Step 600
600 (this color)
#577C83
oklch(56.1% 0.043 210.6)
-
Step 700
700
#46676D
oklch(49.1% 0.039 210.1)
-
Step 800
800
#395459
oklch(42.6% 0.033 210.3)
-
Step 900
900
#324549
oklch(37.6% 0.025 212)
-
Step 950
950
#1D292B
oklch(27.1% 0.017 208.8)
#577C83 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) | #767983 | 0.041 |
| Deuteranopia (no green cones) | #6E7383 | 0.038 |
| Tritanopia (no blue cones) | #477F7E | 0.022 |
| Achromatopsia (no color) | #767676 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577C83
#577C83
oklch(56.1% 0.043 210.6)
- #8C6C66
#8C6C66
oklch(56.1% 0.042 30.6)
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 #577C83, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.025
- Battleship Grey #6B7C85 ΔE 0.026
- Battleship Gray #6C757D ΔE 0.031
- Steel Grey #6F828A ΔE 0.038
- Metallic Blue #4F738E ΔE 0.038
- Stormy Blue #507B9C ΔE 0.041
- Slate Gray #708090 ΔE 0.041
- Cerulean #457B9D ΔE 0.045
Use #577C83 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.