#397A90
Closest named color: Cerulean (#457B9D). oklch(54.6% 0.074 222.9), rgb(57, 122, 144).
Aa
White text reads best on this color (4.81:1).
About this color
#397A90 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.074 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.024 away. White text reads best on it, at 4.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.36:1 |
| White text | 4.81:1 |
Values
| HEX | #397A90 |
| RGB | rgb(57, 122, 144) |
| HSL | hsl(195, 43%, 39%) |
| OKLCH | oklch(54.6% 0.074 222.9) |
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 #397A90 | 4.81:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #397A90 | 4.36:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #397A90 text on white | 4.81:1 | AA | Lc 73.2 | Content text, not long reading |
| #397A90 text on black | 4.36:1 | AA large text | Lc -28.5 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CDDCE2
oklch(88.5% 0.018 223.6)
-
Step 300
300
#AAC6D0
oklch(80.9% 0.033 221.4)
-
Step 400
400
#7CA8B9
oklch(70.6% 0.053 223.8)
-
Step 500
500
#5993A8
oklch(63.2% 0.068 223.2)
-
Step 600
600 (this color)
#397A90
oklch(54.6% 0.074 222.9)
-
Step 700
700
#2E697D
oklch(49% 0.069 223.2)
-
Step 800
800
#275666
oklch(42.7% 0.057 223)
-
Step 900
900
#254753
oklch(37.7% 0.045 223)
-
Step 950
950
#162A31
oklch(27.1% 0.029 222.4)
#397A90 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) | #6D7791 | 0.059 |
| Deuteranopia (no green cones) | #616E90 | 0.053 |
| Tritanopia (no blue cones) | #008181 | 0.045 |
| Achromatopsia (no color) | #727272 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #397A90
#397A90
oklch(54.6% 0.074 222.9)
- #95624D
#95624D
oklch(54.6% 0.074 43.1)
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 #397A90, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.024
- Ocean #017B92 ΔE 0.025
- Metallic Blue #4F738E ΔE 0.027
- Stormy Blue #507B9C ΔE 0.031
- Dull Blue #49759C ΔE 0.031
- Sea Blue #047495 ΔE 0.036
- Deep Aqua #08787F ΔE 0.040
- Muted Blue #3B719F ΔE 0.041
Use #397A90 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.