#055A73
Closest named color: Petrol (#005F6A). oklch(43.6% 0.081 225.4), rgb(5, 90, 115).
Aa
White text reads best on this color (7.73:1).
About this color
#055A73 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 44%, its chroma 0.081 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.025 away. White text reads best on it, at 7.73:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.71:1 |
| White text | 7.73:1 |
Values
| HEX | #055A73 |
| RGB | rgb(5, 90, 115) |
| HSL | hsl(194, 92%, 24%) |
| OKLCH | oklch(43.6% 0.081 225.4) |
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 #055A73 | 7.73:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #055A73 | 2.71:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #055A73 text on white | 7.73:1 | AAA | Lc 86.4 | Fine for body text |
| #055A73 text on black | 2.71:1 | Fails | Lc -15.7 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE6
oklch(88.5% 0.026 225.3)
-
Step 300
300
#A1C8D8
oklch(81% 0.047 224.8)
-
Step 400
400
#6AABC5
oklch(70.7% 0.076 225.5)
-
Step 500
500
#3B95B6
oklch(63% 0.097 225.9)
-
Step 600
600
#027FA2
oklch(55.6% 0.106 225.8)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800 (this color)
#055A73
oklch(43.6% 0.081 225.4)
-
Step 900
900
#11485B
oklch(37.6% 0.064 225.9)
-
Step 950
950
#0D2A35
oklch(26.9% 0.04 226.2)
#055A73 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) | #4C5874 | 0.061 |
| Deuteranopia (no green cones) | #3F4F73 | 0.053 |
| Tritanopia (no blue cones) | #006162 | 0.042 |
| Achromatopsia (no color) | #535353 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #055A73
#055A73
oklch(43.6% 0.081 225.4)
- #764229
#764229
oklch(43.7% 0.081 45.6)
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 #055A73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.025
- Deep Sea Blue #015482 ΔE 0.035
- Deep Teal #00555A ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.047
- Light Navy #155084 ΔE 0.047
- Dark Aqua #05696B ΔE 0.054
- Dusk Blue #26538D ΔE 0.056
Use #055A73 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.