#006378
Closest named color: Petrol (#005F6A). oklch(46.2% 0.084 219), rgb(0, 99, 120).
Aa
White text reads best on this color (6.87:1).
About this color
#006378 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.084 and its hue 219°. 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 6.87:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 3.05:1 |
| White text | 6.87:1 |
Values
| HEX | #006378 |
| RGB | rgb(0, 99, 120) |
| HSL | hsl(191, 100%, 24%) |
| OKLCH | oklch(46.2% 0.084 219) |
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 #006378 | 6.87:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #006378 | 3.05:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #006378 text on white | 6.87:1 | AA | Lc 83.2 | Fine for body text |
| #006378 text on black | 3.05:1 | AA large text | Lc -18.7 | 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 700.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CADDE3
oklch(88.5% 0.022 218.6)
-
Step 300
300
#A4C7D2
oklch(80.8% 0.04 218.8)
-
Step 400
400
#72ABBC
oklch(70.8% 0.064 218.6)
-
Step 500
500
#4895AB
oklch(63% 0.082 219.1)
-
Step 600
600
#237F97
oklch(55.5% 0.09 219.6)
-
Step 700
700 (this color)
#006378
oklch(46.2% 0.084 219)
-
Step 800
800
#155869
oklch(42.8% 0.069 219)
-
Step 900
900
#1A4855
oklch(37.6% 0.054 219.6)
-
Step 950
950
#112A32
oklch(26.9% 0.034 221.3)
#006378 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) | #566079 | 0.070 |
| Deuteranopia (no green cones) | #485678 | 0.062 |
| Tritanopia (no blue cones) | #006A6A | 0.037 |
| Achromatopsia (no color) | #5A5A5A | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #006378
#006378
oklch(46.2% 0.084 219)
- #804734
#804734
oklch(46.2% 0.084 39.1)
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 #006378, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.024
- Dark Aqua #05696B ΔE 0.033
- Peacock Blue #016795 ΔE 0.047
- YInMn Blue #415A77 ΔE 0.048
- Light Navy Blue #2E5A88 ΔE 0.049
- Denim #3B638C ΔE 0.052
- Deep Turquoise #017374 ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.054
Use #006378 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.