#055D8B
Closest named color: Light Navy Blue (#2E5A88). oklch(45.7% 0.104 240.7), rgb(5, 93, 139).
Aa
White text reads best on this color (7.13:1).
About this color
#055D8B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.104 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.023 away. White text reads best on it, at 7.13:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.94:1 |
| White text | 7.13:1 |
Values
| HEX | #055D8B |
| RGB | rgb(5, 93, 139) |
| HSL | hsl(201, 93%, 28%) |
| OKLCH | oklch(45.7% 0.104 240.7) |
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 #055D8B | 7.13:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #055D8B | 2.94:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #055D8B text on white | 7.13:1 | AAA | Lc 84.2 | Fine for body text |
| #055D8B text on black | 2.94:1 | Fails | Lc -17.8 | 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 800.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C6DDEE
oklch(88.6% 0.034 239.9)
-
Step 300
300
#9EC6E5
oklch(80.8% 0.061 241.8)
-
Step 400
400
#66A8D7
oklch(70.6% 0.097 241)
-
Step 500
500
#3392CD
oklch(63.2% 0.124 240.5)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800 (this color)
#055D8B
oklch(45.7% 0.104 240.7)
-
Step 900
900
#0B4668
oklch(37.7% 0.081 240.6)
-
Step 950
950
#0A293D
oklch(26.9% 0.052 241)
#055D8B 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) | #475E8D | 0.051 |
| Deuteranopia (no green cones) | #35538A | 0.039 |
| Tritanopia (no blue cones) | #00696D | 0.071 |
| Achromatopsia (no color) | #585858 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #055D8B
#055D8B
oklch(45.7% 0.104 240.7)
- #804705
#804705
oklch(45.7% 0.104 60.7)
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 #055D8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.023
- Deep Sea Blue #015482 ΔE 0.029
- Peacock Blue #016795 ΔE 0.031
- Dusk Blue #26538D ΔE 0.032
- Light Navy #155084 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.039
- Denim #3B638C ΔE 0.043
- YInMn Blue #415A77 ΔE 0.050
Use #055D8B 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.