#577983
Closest named color: Grey Blue (#647D8E). oklch(55.4% 0.042 217.9), rgb(87, 121, 131).
Aa
White text reads best on this color (4.70:1).
About this color
#577983 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 55%, its chroma 0.042 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.026 away. White text reads best on it, at 4.70:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.46:1 |
| White text | 4.70:1 |
Values
| HEX | #577983 |
| RGB | rgb(87, 121, 131) |
| HSL | hsl(194, 20%, 43%) |
| OKLCH | oklch(55.4% 0.042 217.9) |
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 #577983 | 4.70:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #577983 | 4.46:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #577983 text on white | 4.70:1 | AA | Lc 72.6 | Content text, not long reading |
| #577983 text on black | 4.46:1 | AA large text | Lc -29.1 | Dividers and decoration only |
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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDE
oklch(88.5% 0.011 219.6)
-
Step 300
300
#B4C4C9
oklch(81% 0.019 218.4)
-
Step 400
400
#8DA6AD
oklch(70.8% 0.03 216.5)
-
Step 500
500
#709099
oklch(63.2% 0.038 216.8)
-
Step 600
600 (this color)
#577983
oklch(55.4% 0.042 217.9)
-
Step 700
700
#47666F
oklch(49% 0.039 217.8)
-
Step 800
800
#3B535B
oklch(42.6% 0.032 220.5)
-
Step 900
900
#33454A
oklch(37.7% 0.024 216.7)
-
Step 950
950
#1E282C
oklch(26.9% 0.016 224.2)
#577983 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) | #727784 | 0.036 |
| Deuteranopia (no green cones) | #6B7183 | 0.034 |
| Tritanopia (no blue cones) | #487D7C | 0.025 |
| Achromatopsia (no color) | #747474 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577983
#577983
oklch(55.4% 0.042 217.9)
- #896B61
#896B61
oklch(55.5% 0.042 39.2)
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 #577983, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.026
- Battleship Gray #6C757D ΔE 0.028
- Battleship Grey #6B7C85 ΔE 0.029
- Metallic Blue #4F738E ΔE 0.031
- Stormy Blue #507B9C ΔE 0.038
- Cerulean #457B9D ΔE 0.042
- Steel Grey #6F828A ΔE 0.044
- Slate Gray #708090 ΔE 0.044
Use #577983 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.