#55788B
Closest named color: Metallic Blue (#4F738E). oklch(55.3% 0.05 232.6), rgb(85, 120, 139).
Aa
White text reads best on this color (4.72:1).
About this color
#55788B is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.050 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.019 away. White text reads best on it, at 4.72:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.44:1 |
| White text | 4.72:1 |
Values
| HEX | #55788B |
| RGB | rgb(85, 120, 139) |
| HSL | hsl(201, 24%, 44%) |
| OKLCH | oklch(55.3% 0.05 232.6) |
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 #55788B | 4.72:1 | AA | Lc -78.2 | Fine for body text |
| Black text on #55788B | 4.44:1 | AA large text | Lc 31.3 | Non-text elements, placeholder text |
| #55788B text on white | 4.72:1 | AA | Lc 72.8 | Content text, not long reading |
| #55788B text on black | 4.44:1 | AA large text | Lc -28.9 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D1DBE0
oklch(88.5% 0.013 228.9)
-
Step 300
300
#B3C3CD
oklch(80.8% 0.023 235.1)
-
Step 400
400
#8BA5B3
oklch(70.7% 0.035 231.5)
-
Step 500
500
#6E8FA1
oklch(63.2% 0.046 232.3)
-
Step 600
600 (this color)
#55788B
oklch(55.3% 0.05 232.6)
-
Step 700
700
#466677
oklch(49.2% 0.046 232.1)
-
Step 800
800
#3A5361
oklch(42.8% 0.038 233.4)
-
Step 900
900
#32454F
oklch(37.8% 0.029 231.4)
-
Step 950
950
#1D282E
oklch(26.9% 0.019 232.2)
#55788B 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) | #6F778C | 0.034 |
| Deuteranopia (no green cones) | #67718B | 0.029 |
| Tritanopia (no blue cones) | #417D7E | 0.037 |
| Achromatopsia (no color) | #737373 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55788B
#55788B
oklch(55.3% 0.05 232.6)
- #8A6B58
#8A6B58
oklch(55.3% 0.049 52.9)
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 #55788B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.019
- Grey Blue #647D8E ΔE 0.025
- Stormy Blue #507B9C ΔE 0.026
- Cerulean #457B9D ΔE 0.030
- Dull Blue #49759C ΔE 0.033
- Battleship Grey #6B7C85 ΔE 0.034
- Battleship Gray #6C757D ΔE 0.034
- Slate Gray #708090 ΔE 0.045
Use #55788B 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.