#004E66
Closest named color: Dark Grey Blue (#29465B). oklch(39.5% 0.076 227), rgb(0, 78, 102).
Aa
White text reads best on this color (9.20:1).
About this color
#004E66 is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 40%, its chroma 0.076 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.034 away. White text reads best on it, at 9.20:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.28:1 |
| White text | 9.20:1 |
Values
| HEX | #004E66 |
| RGB | rgb(0, 78, 102) |
| HSL | hsl(194, 100%, 20%) |
| OKLCH | oklch(39.5% 0.076 227) |
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 #004E66 | 9.20:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #004E66 | 2.28:1 | Fails | Lc 13.3 | Not readable |
| #004E66 text on white | 9.20:1 | AAA | Lc 90.7 | Preferred for body text |
| #004E66 text on black | 2.28:1 | Fails | Lc -11.6 | Not readable |
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 900.
-
Step 50
50
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFECF3
oklch(93.5% 0.017 230.9)
-
Step 200
200
#C4DEEA
oklch(88.5% 0.032 227.3)
-
Step 300
300
#9AC9DE
oklch(81% 0.057 227.1)
-
Step 400
400
#5CACCD
oklch(70.6% 0.092 227.2)
-
Step 500
500
#1897C0
oklch(63.2% 0.117 226.8)
-
Step 600
600
#007FA4
oklch(55.6% 0.108 227.1)
-
Step 700
700
#006B8A
oklch(49.2% 0.095 226.5)
-
Step 800
800
#005772
oklch(42.6% 0.083 227.6)
-
Step 900
900 (this color)
#004E66
oklch(39.5% 0.076 227)
-
Step 950
950
#042B39
oklch(27.1% 0.049 227.2)
#004E66 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) | #414C67 | 0.055 |
| Deuteranopia (no green cones) | #354466 | 0.048 |
| Tritanopia (no blue cones) | #005556 | 0.041 |
| Achromatopsia (no color) | #484848 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004E66
#004E66
oklch(39.5% 0.076 227)
- #673820
#673820
oklch(39.4% 0.076 46.7)
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 #004E66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.034
- Deep Teal #00555A ΔE 0.035
- Charcoal #264653 ΔE 0.038
- Dark Teal #014D4E ΔE 0.041
- Deep Sea Blue #015482 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.049
- Light Navy #155084 ΔE 0.053
- Twilight Blue #0A437A ΔE 0.054
Use #004E66 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.