#557184
Closest named color: Metallic Blue (#4F738E). oklch(53.4% 0.044 238.3), rgb(85, 113, 132).
Aa
White text reads best on this color (5.14:1).
About this color
#557184 is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.044 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.016 away. White text reads best on it, at 5.14:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.08:1 |
| White text | 5.14:1 |
Values
| HEX | #557184 |
| RGB | rgb(85, 113, 132) |
| HSL | hsl(204, 22%, 43%) |
| OKLCH | oklch(53.4% 0.044 238.3) |
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 #557184 | 5.14:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #557184 | 4.08:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #557184 text on white | 5.14:1 | AA | Lc 75.4 | Fine for body text |
| #557184 text on black | 4.08:1 | AA large text | Lc -26.3 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAED
oklch(93.5% 0.006 239.8)
-
Step 200
200
#D3DAE0
oklch(88.5% 0.011 243.7)
-
Step 300
300
#B5C3CC
oklch(80.9% 0.02 235.8)
-
Step 400
400
#8FA4B3
oklch(70.7% 0.032 239)
-
Step 500
500
#738DA0
oklch(63% 0.041 240)
-
Step 600
600 (this color)
#557184
oklch(53.4% 0.044 238.3)
-
Step 700
700
#4B6476
oklch(49% 0.042 240)
-
Step 800
800
#3E5260
oklch(42.8% 0.034 239.1)
-
Step 900
900
#35444E
oklch(37.8% 0.026 237.6)
-
Step 950
950
#1F282E
oklch(27.1% 0.017 237.4)
#557184 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) | #697085 | 0.027 |
| Deuteranopia (no green cones) | #626B84 | 0.024 |
| Tritanopia (no blue cones) | #457677 | 0.035 |
| Achromatopsia (no color) | #6D6D6D | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #557184
#557184
oklch(53.4% 0.044 238.3)
- #816754
#816754
oklch(53.4% 0.044 57.8)
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 #557184, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.016
- Battleship Gray #6C757D ΔE 0.037
- Dull Blue #49759C ΔE 0.037
- Stormy Blue #507B9C ΔE 0.041
- Slate #516572 ΔE 0.041
- Grey Blue #647D8E ΔE 0.043
- Cerulean #457B9D ΔE 0.043
- Dim Gray #696969 ΔE 0.046
Use #557184 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.