#427178
Closest named color: Deep Aqua (#08787F). oklch(51.8% 0.052 207.8), rgb(66, 113, 120).
Aa
White text reads best on this color (5.43:1).
About this color
#427178 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.052 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.036 away. White text reads best on it, at 5.43:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #427178 |
| RGB | rgb(66, 113, 120) |
| HSL | hsl(188, 29%, 36%) |
| OKLCH | oklch(51.8% 0.052 207.8) |
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 #427178 | 5.43:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #427178 | 3.86:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #427178 text on white | 5.43:1 | AA | Lc 77.0 | Fine for body text |
| #427178 text on black | 3.86:1 | AA large text | Lc -24.7 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#CFDCDE
oklch(88.5% 0.014 207.9)
-
Step 300
300
#AFC6C9
oklch(81% 0.025 206.2)
-
Step 400
400
#84A8AE
oklch(70.7% 0.04 208.8)
-
Step 500
500
#64939A
oklch(63.2% 0.052 207.6)
-
Step 600
600
#497D84
oklch(55.6% 0.057 206.7)
-
Step 700
700 (this color)
#427178
oklch(51.8% 0.052 207.8)
-
Step 800
800
#31565B
oklch(42.8% 0.043 206.7)
-
Step 900
900
#2B474B
oklch(37.7% 0.034 207.2)
-
Step 950
950
#1A292C
oklch(26.9% 0.021 211.4)
#427178 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) | #6A6E78 | 0.051 |
| Deuteranopia (no green cones) | #616778 | 0.047 |
| Tritanopia (no blue cones) | #297573 | 0.027 |
| Achromatopsia (no color) | #6A6A6A | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427178
#427178
oklch(51.8% 0.052 207.8)
- #845D58
#845D58
oklch(51.8% 0.052 27.2)
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 #427178, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.036
- Slate #516572 ΔE 0.037
- Deep Turquoise #017374 ΔE 0.039
- Metallic Blue #4F738E ΔE 0.039
- Dark Aquamarine #017371 ΔE 0.041
- Bluegreen #017A79 ΔE 0.041
- Ocean #017B92 ΔE 0.049
- Teal #008080 ΔE 0.050
Use #427178 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.