#005F78
Closest named color: Petrol (#005F6A). oklch(45.1% 0.085 223.8), rgb(0, 95, 120).
Aa
White text reads best on this color (7.22:1).
About this color
#005F78 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 45%, its chroma 0.085 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.024 away. White text reads best on it, at 7.22:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.90:1 |
| White text | 7.22:1 |
Values
| HEX | #005F78 |
| RGB | rgb(0, 95, 120) |
| HSL | hsl(193, 100%, 24%) |
| OKLCH | oklch(45.1% 0.085 223.8) |
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 #005F78 | 7.22:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #005F78 | 2.90:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #005F78 text on white | 7.22:1 | AAA | Lc 84.5 | Fine for body text |
| #005F78 text on black | 2.90:1 | Fails | Lc -17.5 | 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
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C7DEE7
oklch(88.6% 0.028 223.3)
-
Step 300
300
#9FC8D8
oklch(80.9% 0.049 223.7)
-
Step 400
400
#67ACC5
oklch(70.8% 0.079 223.3)
-
Step 500
500
#3396B6
oklch(63% 0.101 223.6)
-
Step 600
600
#0080A0
oklch(55.7% 0.104 223.4)
-
Step 700
700
#006B87
oklch(49% 0.092 224)
-
Step 800
800 (this color)
#005F78
oklch(45.1% 0.085 223.8)
-
Step 900
900
#0B495B
oklch(37.8% 0.066 223)
-
Step 950
950
#0A2B35
oklch(27% 0.042 221.8)
#005F78 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) | #515D79 | 0.066 |
| Deuteranopia (no green cones) | #435378 | 0.057 |
| Tritanopia (no blue cones) | #006667 | 0.041 |
| Achromatopsia (no color) | #575757 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #005F78
#005F78
oklch(45.1% 0.085 223.8)
- #7C452D
#7C452D
oklch(45.2% 0.084 43.8)
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 #005F78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.024
- Deep Sea Blue #015482 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.043
- Dark Aqua #05696B ΔE 0.044
- YInMn Blue #415A77 ΔE 0.045
- Peacock Blue #016795 ΔE 0.049
- Deep Teal #00555A ΔE 0.053
- Denim #3B638C ΔE 0.054
Use #005F78 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.