#427271
Closest named color: Deep Turquoise (#017374). oklch(51.8% 0.052 193.9), rgb(66, 114, 113).
Aa
White text reads best on this color (5.41:1).
About this color
#427271 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.052 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.036 away. White text reads best on it, at 5.41:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.87:1 |
| White text | 5.41:1 |
Values
| HEX | #427271 |
| RGB | rgb(66, 114, 113) |
| HSL | hsl(179, 27%, 35%) |
| OKLCH | oklch(51.8% 0.052 193.9) |
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 #427271 | 5.41:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #427271 | 3.87:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #427271 text on white | 5.41:1 | AA | Lc 76.9 | Fine for body text |
| #427271 text on black | 3.87:1 | AA large text | Lc -24.8 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#CFDCDC
oklch(88.5% 0.014 196.9)
-
Step 300
300
#AFC6C5
oklch(80.9% 0.025 193.5)
-
Step 400
400
#84A9A8
oklch(70.7% 0.04 194.2)
-
Step 500
500
#649493
oklch(63.2% 0.052 194.3)
-
Step 600
600
#497E7D
oklch(55.6% 0.057 194.1)
-
Step 700
700 (this color)
#427271
oklch(51.8% 0.052 193.9)
-
Step 800
800
#315756
oklch(42.8% 0.043 193.5)
-
Step 900
900
#2B4747
oklch(37.6% 0.034 195.8)
-
Step 950
950
#1A2A29
oklch(27% 0.022 191)
#427271 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) | #6D6E71 | 0.056 |
| Deuteranopia (no green cones) | #646771 | 0.052 |
| Tritanopia (no blue cones) | #2D7572 | 0.019 |
| Achromatopsia (no color) | #6A6A6A | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #427271
#427271
oklch(51.8% 0.052 193.9)
- #845C5F
#845C5F
oklch(51.8% 0.053 14.1)
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 #427271, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.036
- Deep Aqua #08787F ΔE 0.036
- Dark Aquamarine #017371 ΔE 0.037
- Bluegreen #017A79 ΔE 0.038
- Slate #516572 ΔE 0.043
- Teal #008080 ΔE 0.048
- Metallic Blue #4F738E ΔE 0.050
- Dark Aqua #05696B ΔE 0.052
Use #427271 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.