#536B77
Closest named color: Slate (#516572). oklch(51.3% 0.034 229.9), rgb(83, 107, 119).
Aa
White text reads best on this color (5.61:1).
About this color
#536B77 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.034 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.018 away. White text reads best on it, at 5.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.73:1 |
| White text | 5.61:1 |
Values
| HEX | #536B77 |
| RGB | rgb(83, 107, 119) |
| HSL | hsl(200, 18%, 40%) |
| OKLCH | oklch(51.3% 0.034 229.9) |
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 #536B77 | 5.61:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #536B77 | 3.73:1 | AA large text | Lc 26.0 | Dividers and decoration only |
| #536B77 text on white | 5.61:1 | AA | Lc 78.1 | Fine for body text |
| #536B77 text on black | 3.73:1 | AA large text | Lc -23.7 | 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 700.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D3DADE
oklch(88.4% 0.009 232.4)
-
Step 300
300
#B6C3C9
oklch(80.9% 0.017 227)
-
Step 400
400
#90A4AE
oklch(70.6% 0.027 229.3)
-
Step 500
500
#758E9A
oklch(63.1% 0.034 228.5)
-
Step 600
600
#5D7885
oklch(55.6% 0.037 228.9)
-
Step 700
700 (this color)
#536B77
oklch(51.3% 0.034 229.9)
-
Step 800
800
#3F525C
oklch(42.7% 0.029 231.2)
-
Step 900
900
#36444B
oklch(37.7% 0.022 229.7)
-
Step 950
950
#20282C
oklch(27.1% 0.014 229.5)
#536B77 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) | #656A78 | 0.025 |
| Deuteranopia (no green cones) | #606677 | 0.022 |
| Tritanopia (no blue cones) | #486E6F | 0.023 |
| Achromatopsia (no color) | #676767 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #536B77
#536B77
oklch(51.3% 0.034 229.9)
- #786256
#786256
oklch(51.4% 0.034 50.2)
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 #536B77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.018
- Dim Gray #696969 ΔE 0.035
- Metallic Blue #4F738E ΔE 0.037
- Battleship Gray #6C757D ΔE 0.048
- Denim #3B638C ΔE 0.055
- Dull Blue #49759C ΔE 0.058
- Deep Aqua #08787F ΔE 0.060
- Dusty Grape #545775 ΔE 0.060
Use #536B77 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.