#439B99
Closest named color: Sea (#3C9992). oklch(63.6% 0.084 193.2), rgb(67, 155, 153).
Aa
Black text reads best on this color (6.38:1).
About this color
#439B99 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.084 and its hue 193°. 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 6.38:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.38:1 |
| White text | 3.28:1 |
Values
| HEX | #439B99 |
| RGB | rgb(67, 155, 153) |
| HSL | hsl(179, 40%, 44%) |
| OKLCH | oklch(63.6% 0.084 193.2) |
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 #439B99 | 3.28:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #439B99 | 6.38:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #439B99 text on white | 3.28:1 | AA large text | Lc 60.0 | Content text, not long reading |
| #439B99 text on black | 6.38:1 | 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
#E1ECEC
oklch(93.5% 0.012 197)
-
Step 200
200
#C9DEDD
oklch(88.5% 0.022 193.3)
-
Step 300
300
#A3C9C8
oklch(80.8% 0.04 194.4)
-
Step 400
400
#6EAEAC
oklch(70.7% 0.066 193.2)
-
Step 500
500 (this color)
#439B99
oklch(63.6% 0.084 193.2)
-
Step 600
600
#148482
oklch(55.7% 0.091 192.9)
-
Step 700
700
#006F6E
oklch(49% 0.084 193.7)
-
Step 800
800
#0A5B5A
oklch(42.8% 0.07 193.5)
-
Step 900
900
#154B4A
oklch(37.8% 0.055 193.3)
-
Step 950
950
#0F2C2B
oklch(27.1% 0.035 192.2)
#439B99 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) | #929499 | 0.088 |
| Deuteranopia (no green cones) | #84899A | 0.083 |
| Tritanopia (no blue cones) | #009F9A | 0.026 |
| Achromatopsia (no color) | #8E8E8E | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439B99
#439B99
oklch(63.6% 0.084 193.2)
- #B8767C
#B8767C
oklch(63.7% 0.083 13.8)
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 #439B99, 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 0.025
- Cadet Blue #5F9EA0 ΔE 0.030
- Grey Teal #5E9B8A ΔE 0.030
- Dull Teal #5F9E8F ΔE 0.031
- Blue Green #0F9B8E ΔE 0.032
- Dusty Teal #4C9085 ΔE 0.036
- Teal Green #0A9396 ΔE 0.038
Use #439B99 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.