#439C8F
Closest named color: Sea (#3C9992). oklch(63.5% 0.087 182.4), rgb(67, 156, 143).
Aa
Black text reads best on this color (6.39:1).
About this color
#439C8F is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.087 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.013 away. Black text reads best on it, at 6.39:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.39:1 |
| White text | 3.28:1 |
Values
| HEX | #439C8F |
| RGB | rgb(67, 156, 143) |
| HSL | hsl(171, 40%, 44%) |
| OKLCH | oklch(63.5% 0.087 182.4) |
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 #439C8F | 3.28:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #439C8F | 6.39:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #439C8F text on white | 3.28:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #439C8F text on black | 6.39:1 | AA | Lc -41.7 | 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
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C9DFDA
oklch(88.6% 0.024 180.6)
-
Step 300
300
#A3CAC3
oklch(80.9% 0.043 183.1)
-
Step 400
400
#6EAFA4
oklch(70.7% 0.069 182.4)
-
Step 500
500 (this color)
#439C8F
oklch(63.5% 0.087 182.4)
-
Step 600
600
#148578
oklch(55.6% 0.095 182.6)
-
Step 700
700
#007165
oklch(49.2% 0.088 182.2)
-
Step 800
800
#0A5C52
oklch(42.8% 0.073 181.9)
-
Step 900
900
#164B44
oklch(37.6% 0.056 182.9)
-
Step 950
950
#0F2C28
oklch(27% 0.036 183.4)
#439C8F 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) | #95948F | 0.092 |
| Deuteranopia (no green cones) | #878A90 | 0.087 |
| Tritanopia (no blue cones) | #009F98 | 0.025 |
| Achromatopsia (no color) | #8E8E8E | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439C8F
#439C8F
oklch(63.5% 0.087 182.4)
- #B77486
#B77486
oklch(63.5% 0.087 2.4)
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 #439C8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.013
- Persian Green #2A9D8F ΔE 0.015
- Grey Teal #5E9B8A ΔE 0.023
- Blue Green #0F9B8E ΔE 0.025
- Dull Teal #5F9E8F ΔE 0.026
- Dusty Teal #4C9085 ΔE 0.034
- Cadet Blue #5F9EA0 ΔE 0.038
- Ocean Green #3D9973 ΔE 0.041
Use #439C8F 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.