#55708A
Closest named color: Metallic Blue (#4F738E). oklch(53.4% 0.052 247.9), rgb(85, 112, 138).
Aa
White text reads best on this color (5.15:1).
About this color
#55708A is a medium-dark, muted blue. In OKLCH its lightness is 53%, its chroma 0.052 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.011 away. White text reads best on it, at 5.15:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.07:1 |
| White text | 5.15:1 |
Values
| HEX | #55708A |
| RGB | rgb(85, 112, 138) |
| HSL | hsl(209, 24%, 44%) |
| OKLCH | oklch(53.4% 0.052 247.9) |
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 #55708A | 5.15:1 | AA | Lc -80.9 | Fine for body text |
| Black text on #55708A | 4.07:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #55708A text on white | 5.15:1 | AA | Lc 75.5 | Fine for body text |
| #55708A text on black | 4.07:1 | AA large text | Lc -26.2 | 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
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D3DAE1
oklch(88.5% 0.012 248)
-
Step 300
300
#B5C2CF
oklch(80.8% 0.023 248.1)
-
Step 400
400
#8FA3B7
oklch(70.7% 0.037 248.3)
-
Step 500
500
#738DA5
oklch(63.2% 0.047 246.5)
-
Step 600
600 (this color)
#55708A
oklch(53.4% 0.052 247.9)
-
Step 700
700
#4B637B
oklch(49% 0.048 248.8)
-
Step 800
800
#3E5164
oklch(42.7% 0.04 248.8)
-
Step 900
900
#354352
oklch(37.7% 0.032 250.4)
-
Step 950
950
#1F2730
oklch(26.9% 0.02 251.6)
#55708A 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) | #66708B | 0.023 |
| Deuteranopia (no green cones) | #5F6B89 | 0.018 |
| Tritanopia (no blue cones) | #437679 | 0.043 |
| Achromatopsia (no color) | #6D6D6D | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55708A
#55708A
oklch(53.4% 0.052 247.9)
- #81684C
#81684C
oklch(53.5% 0.052 69.5)
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 #55708A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.011
- Dull Blue #49759C ΔE 0.029
- Stormy Blue #507B9C ΔE 0.036
- Cerulean #457B9D ΔE 0.038
- Muted Blue #3B719F ΔE 0.041
- Battleship Gray #6C757D ΔE 0.042
- Slate #516572 ΔE 0.044
- Grey Blue #647D8E ΔE 0.045
Use #55708A 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.