#577781
Closest named color: Battleship Gray (#6C757D). oklch(54.8% 0.04 219.1), rgb(87, 119, 129).
Aa
White text reads best on this color (4.81:1).
About this color
#577781 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 55%, its chroma 0.040 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Battleship Gray (#6C757D), ΔE 0.027 away. White text reads best on it, at 4.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Battleship Gray (#6C757D) |
| Black text | 4.36:1 |
| White text | 4.81:1 |
Values
| HEX | #577781 |
| RGB | rgb(87, 119, 129) |
| HSL | hsl(194, 19%, 42%) |
| OKLCH | oklch(54.8% 0.04 219.1) |
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 #577781 | 4.81:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #577781 | 4.36:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #577781 text on white | 4.81:1 | AA | Lc 73.4 | Content text, not long reading |
| #577781 text on black | 4.36:1 | AA large text | Lc -28.3 | 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
#B5C4C8
oklch(81% 0.017 215.5)
-
Step 400
400
#8EA5AD
oklch(70.7% 0.028 220.8)
-
Step 500
500
#718F99
oklch(63.1% 0.037 220.2)
-
Step 600
600 (this color)
#577781
oklch(54.8% 0.04 219.1)
-
Step 700
700
#49666F
oklch(49.1% 0.037 219)
-
Step 800
800
#3C535A
oklch(42.6% 0.03 218.5)
-
Step 900
900
#34454A
oklch(37.8% 0.023 217.7)
-
Step 950
950
#1E282B
oklch(26.9% 0.015 218)
#577781 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) | #717582 | 0.035 |
| Deuteranopia (no green cones) | #6A7081 | 0.031 |
| Tritanopia (no blue cones) | #497B7A | 0.025 |
| Achromatopsia (no color) | #727272 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #577781
#577781
oklch(54.8% 0.04 219.1)
- #866A60
#866A60
oklch(54.9% 0.039 40.6)
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 #577781, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Battleship Gray #6C757D ΔE 0.027
- Metallic Blue #4F738E ΔE 0.029
- Grey Blue #647D8E ΔE 0.031
- Battleship Grey #6B7C85 ΔE 0.032
- Stormy Blue #507B9C ΔE 0.041
- Cerulean #457B9D ΔE 0.044
- Dull Blue #49759C ΔE 0.047
- Steel Grey #6F828A ΔE 0.048
Use #577781 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.