#557684
Closest named color: Metallic Blue (#4F738E). oklch(54.6% 0.044 226.1), rgb(85, 118, 132).
Aa
White text reads best on this color (4.87:1).
About this color
#557684 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 55%, its chroma 0.044 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.022 away. White text reads best on it, at 4.87:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.31:1 |
| White text | 4.87:1 |
Values
| HEX | #557684 |
| RGB | rgb(85, 118, 132) |
| HSL | hsl(198, 22%, 43%) |
| OKLCH | oklch(54.6% 0.044 226.1) |
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 #557684 | 4.87:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #557684 | 4.31:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #557684 text on white | 4.87:1 | AA | Lc 73.7 | Content text, not long reading |
| #557684 text on black | 4.31:1 | AA large text | Lc -28.0 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBDF
oklch(88.6% 0.011 226)
-
Step 300
300
#B4C4CA
oklch(81% 0.019 222.2)
-
Step 400
400
#8DA5B0
oklch(70.7% 0.031 227.2)
-
Step 500
500
#708F9C
oklch(63.1% 0.04 225.4)
-
Step 600
600 (this color)
#557684
oklch(54.6% 0.044 226.1)
-
Step 700
700
#486672
oklch(49.2% 0.04 224.7)
-
Step 800
800
#3B535D
oklch(42.7% 0.034 225.6)
-
Step 900
900
#33454C
oklch(37.8% 0.026 223.7)
-
Step 950
950
#1E282D
oklch(27% 0.017 229.8)
#557684 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) | #6E7485 | 0.034 |
| Deuteranopia (no green cones) | #676F84 | 0.030 |
| Tritanopia (no blue cones) | #457A7A | 0.029 |
| Achromatopsia (no color) | #717171 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557684
#557684
oklch(54.6% 0.044 226.1)
- #86695B
#86695B
oklch(54.6% 0.043 47.1)
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 #557684, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.022
- Battleship Gray #6C757D ΔE 0.031
- Grey Blue #647D8E ΔE 0.032
- Battleship Grey #6B7C85 ΔE 0.035
- Stormy Blue #507B9C ΔE 0.036
- Cerulean #457B9D ΔE 0.039
- Dull Blue #49759C ΔE 0.041
- Dim Gray #696969 ΔE 0.050
Use #557684 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.