#397578
Closest named color: Deep Aqua (#08787F). oklch(52.4% 0.062 199.8), rgb(57, 117, 120).
Aa
White text reads best on this color (5.26:1).
About this color
#397578 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.062 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.025 away. White text reads best on it, at 5.26:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.98:1 |
| White text | 5.26:1 |
Values
| HEX | #397578 |
| RGB | rgb(57, 117, 120) |
| HSL | hsl(183, 36%, 35%) |
| OKLCH | oklch(52.4% 0.062 199.8) |
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 #397578 | 5.26:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #397578 | 3.98:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #397578 text on white | 5.26:1 | AA | Lc 76.0 | Fine for body text |
| #397578 text on black | 3.98:1 | AA large text | Lc -25.7 | 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 600.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CEDCDD
oklch(88.4% 0.015 202)
-
Step 300
300
#ADC6C8
oklch(80.8% 0.027 202.5)
-
Step 400
400
#80AAAB
oklch(70.8% 0.045 198)
-
Step 500
500
#5E9497
oklch(63% 0.057 200.3)
-
Step 600
600 (this color)
#397578
oklch(52.4% 0.062 199.8)
-
Step 700
700
#346B6E
oklch(49.2% 0.058 200.1)
-
Step 800
800
#2C5759
oklch(42.7% 0.048 199.5)
-
Step 900
900
#284849
oklch(37.7% 0.038 198.2)
-
Step 950
950
#182A2B
oklch(27% 0.024 200.3)
#397578 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) | #6E7078 | 0.064 |
| Deuteranopia (no green cones) | #636978 | 0.058 |
| Tritanopia (no blue cones) | #0D7976 | 0.027 |
| Achromatopsia (no color) | #6C6C6C | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397578
#397578
oklch(52.4% 0.062 199.8)
- #8B5B5B
#8B5B5B
oklch(52.3% 0.064 19.4)
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 #397578, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.025
- Bluegreen #017A79 ΔE 0.028
- Deep Turquoise #017374 ΔE 0.031
- Dark Aquamarine #017371 ΔE 0.033
- Teal #008080 ΔE 0.037
- Ocean #017B92 ΔE 0.043
- Metallic Blue #4F738E ΔE 0.046
- Slate #516572 ΔE 0.050
Use #397578 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.