#055B84
Closest named color: Deep Sea Blue (#015482). oklch(44.8% 0.098 238.2), rgb(5, 91, 132).
Aa
White text reads best on this color (7.40:1).
About this color
#055B84 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.098 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.022 away. White text reads best on it, at 7.40:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #055B84 |
| RGB | rgb(5, 91, 132) |
| HSL | hsl(199, 93%, 27%) |
| OKLCH | oklch(44.8% 0.098 238.2) |
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 #055B84 | 7.40:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #055B84 | 2.83:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #055B84 text on white | 7.40:1 | AAA | Lc 85.2 | Fine for body text |
| #055B84 text on black | 2.83:1 | Fails | Lc -16.8 | 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
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C7DDEC
oklch(88.6% 0.031 237.6)
-
Step 300
300
#9FC7E2
oklch(81% 0.057 237.9)
-
Step 400
400
#67A9D3
oklch(70.7% 0.091 237.9)
-
Step 500
500
#3793C7
oklch(63.2% 0.116 237.6)
-
Step 600
600
#007CB3
oklch(55.7% 0.124 238.2)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800 (this color)
#055B84
oklch(44.8% 0.098 238.2)
-
Step 900
900
#0E4765
oklch(37.8% 0.076 237.6)
-
Step 950
950
#0B293B
oklch(26.8% 0.049 238.8)
#055B84 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) | #475B86 | 0.053 |
| Deuteranopia (no green cones) | #375183 | 0.041 |
| Tritanopia (no blue cones) | #006569 | 0.062 |
| Achromatopsia (no color) | #555555 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #055B84
#055B84
oklch(44.8% 0.098 238.2)
- #7C4511
#7C4511
oklch(44.8% 0.098 58.2)
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 #055B84, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.022
- Light Navy Blue #2E5A88 ΔE 0.025
- Light Navy #155084 ΔE 0.033
- Dusk Blue #26538D ΔE 0.034
- Peacock Blue #016795 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.046
- YInMn Blue #415A77 ΔE 0.047
- Denim #3B638C ΔE 0.048
Use #055B84 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.