#399E71
Closest named color: Ocean Green (#3D9973). oklch(62.8% 0.116 160.7), rgb(57, 158, 113).
Aa
Black text reads best on this color (6.30:1).
About this color
#399E71 is a medium-light, moderately saturated green. In OKLCH its lightness is 63%, its chroma 0.116 and its hue 161°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Ocean Green (#3D9973), ΔE 0.016 away. Black text reads best on it, at 6.30:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Ocean Green (#3D9973) |
| Black text | 6.30:1 |
| White text | 3.33:1 |
Values
| HEX | #399E71 |
| RGB | rgb(57, 158, 113) |
| HSL | hsl(153, 47%, 42%) |
| OKLCH | oklch(62.8% 0.116 160.7) |
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 #399E71 | 3.33:1 | AA large text | Lc -65.9 | Content text, not long reading |
| Black text on #399E71 | 6.30:1 | AA | Lc 43.6 | Non-text elements, placeholder text |
| #399E71 text on white | 3.33:1 | AA large text | Lc 60.4 | Content text, not long reading |
| #399E71 text on black | 6.30:1 | AA | Lc -41.3 | 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
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#E1EDE6
oklch(93.5% 0.016 160.6)
-
Step 200
200
#C8E0D2
oklch(88.5% 0.032 160.1)
-
Step 300
300
#A1CDB5
oklch(81% 0.057 160.9)
-
Step 400
400
#6AB28E
oklch(70.6% 0.091 161.1)
-
Step 500
500 (this color)
#399E71
oklch(62.8% 0.116 160.7)
-
Step 600
600
#00895A
oklch(55.6% 0.125 160.5)
-
Step 700
700
#00734B
oklch(49% 0.11 160.6)
-
Step 800
800
#005E3D
oklch(42.6% 0.095 160.9)
-
Step 900
900
#104E34
oklch(37.8% 0.076 160.6)
-
Step 950
950
#0D2E1E
oklch(27.1% 0.049 159.3)
#399E71 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) | #9C936E | 0.110 |
| Deuteranopia (no green cones) | #8E8974 | 0.107 |
| Tritanopia (no blue cones) | #009D92 | 0.050 |
| Achromatopsia (no color) | #8D8D8D | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #399E71
#399E71
oklch(62.8% 0.116 160.7)
- #B76B9E
#B76B9E
oklch(62.8% 0.116 340.5)
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 #399E71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Green #3D9973 ΔE 0.016
- Jade #1FA774 ΔE 0.026
- Viridian #1E9167 ΔE 0.044
- Light Forest Green #4F9153 ΔE 0.044
- Persian Green #2A9D8F ΔE 0.045
- Blue Green #0F9B8E ΔE 0.047
- Muted Green #5FA052 ΔE 0.048
- Seaweed Green #35AD6B ΔE 0.048
Use #399E71 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.