#399E97
Closest named color: Sea (#3C9992). oklch(63.9% 0.093 188.6), rgb(57, 158, 151).
Aa
Black text reads best on this color (6.51:1).
About this color
#399E97 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.093 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.014 away. Black text reads best on it, at 6.51:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.51:1 |
| White text | 3.22:1 |
Values
| HEX | #399E97 |
| RGB | rgb(57, 158, 151) |
| HSL | hsl(176, 47%, 42%) |
| OKLCH | oklch(63.9% 0.093 188.6) |
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 #399E97 | 3.22:1 | AA large text | Lc -64.6 | Content text, not long reading |
| Black text on #399E97 | 6.51:1 | AA | Lc 44.9 | Non-text elements, placeholder text |
| #399E97 text on white | 3.22:1 | AA large text | Lc 59.2 | Large or bold text, headings |
| #399E97 text on black | 6.51:1 | AA | Lc -42.5 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C7DFDC
oklch(88.5% 0.026 187.6)
-
Step 300
300
#A0CBC6
oklch(81% 0.046 187.5)
-
Step 400
400
#68AFA9
oklch(70.6% 0.072 188.7)
-
Step 500
500 (this color)
#399E97
oklch(63.9% 0.093 188.6)
-
Step 600
600
#00857E
oklch(55.6% 0.097 188.3)
-
Step 700
700
#00706A
oklch(49.1% 0.085 188.3)
-
Step 800
800
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#0D4C48
oklch(37.8% 0.06 188.4)
-
Step 950
950
#0B2C2A
oklch(26.9% 0.038 189.5)
#399E97 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) | #959697 | 0.098 |
| Deuteranopia (no green cones) | #868A98 | 0.093 |
| Tritanopia (no blue cones) | #00A29C | 0.019 |
| Achromatopsia (no color) | #8F8F8F | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #399E97
#399E97
oklch(63.9% 0.093 188.6)
- #BC7480
#BC7480
oklch(63.9% 0.092 9.2)
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 #399E97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.014
- Persian Green #2A9D8F ΔE 0.016
- Blue Green #0F9B8E ΔE 0.025
- Dull Teal #5F9E8F ΔE 0.031
- Grey Teal #5E9B8A ΔE 0.031
- Cadet Blue #5F9EA0 ΔE 0.036
- Teal Green #0A9396 ΔE 0.041
- Dusty Teal #4C9085 ΔE 0.041
Use #399E97 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.