#399E87
Closest named color: Persian Green (#2A9D8F). oklch(63.4% 0.099 175), rgb(57, 158, 135).
Aa
Black text reads best on this color (6.41:1).
About this color
#399E87 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.099 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Persian Green (#2A9D8F), ΔE 0.015 away. Black text reads best on it, at 6.41:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Persian Green (#2A9D8F) |
| Black text | 6.41:1 |
| White text | 3.27:1 |
Values
| HEX | #399E87 |
| RGB | rgb(57, 158, 135) |
| HSL | hsl(166, 47%, 42%) |
| OKLCH | oklch(63.4% 0.099 175) |
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 #399E87 | 3.27:1 | AA large text | Lc -65.2 | Content text, not long reading |
| Black text on #399E87 | 6.41:1 | AA | Lc 44.3 | Non-text elements, placeholder text |
| #399E87 text on white | 3.27:1 | AA large text | Lc 59.8 | Large or bold text, headings |
| #399E87 text on black | 6.41:1 | AA | Lc -41.9 | 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
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE9
oklch(93.6% 0.014 174.2)
-
Step 200
200
#C8DFD8
oklch(88.5% 0.026 175.5)
-
Step 300
300
#A1CBBF
oklch(80.9% 0.048 175.7)
-
Step 400
400
#69B19E
oklch(70.7% 0.078 175.2)
-
Step 500
500 (this color)
#399E87
oklch(63.4% 0.099 175)
-
Step 600
600
#008770
oklch(55.7% 0.105 175.1)
-
Step 700
700
#00715E
oklch(49% 0.092 175.6)
-
Step 800
800
#005D4C
oklch(42.7% 0.081 174.6)
-
Step 900
900
#0E4D40
oklch(37.8% 0.065 175.2)
-
Step 950
950
#0C2D25
oklch(27% 0.041 174.3)
#399E87 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) | #999486 | 0.105 |
| Deuteranopia (no green cones) | #8A8A89 | 0.099 |
| Tritanopia (no blue cones) | #00A097 | 0.026 |
| Achromatopsia (no color) | #8E8E8E | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #399E87
#399E87
oklch(63.4% 0.099 175)
- #BA708D
#BA708D
oklch(63.4% 0.1 355.3)
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 #399E87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Persian Green #2A9D8F ΔE 0.015
- Blue Green #0F9B8E ΔE 0.023
- Sea #3C9992 ΔE 0.026
- Ocean Green #3D9973 ΔE 0.028
- Grey Teal #5E9B8A ΔE 0.032
- Dull Teal #5F9E8F ΔE 0.035
- Dusty Teal #4C9085 ΔE 0.042
- Jade #1FA774 ΔE 0.046
Use #399E87 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.