#439FA1
Closest named color: Cadet Blue (#5F9EA0). oklch(64.9% 0.086 197.2), rgb(67, 159, 161).
Aa
Black text reads best on this color (6.71:1).
About this color
#439FA1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.086 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.023 away. Black text reads best on it, at 6.71:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.71:1 |
| White text | 3.12:1 |
Values
| HEX | #439FA1 |
| RGB | rgb(67, 159, 161) |
| HSL | hsl(181, 41%, 45%) |
| OKLCH | oklch(64.9% 0.086 197.2) |
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 #439FA1 | 3.12:1 | AA large text | Lc -63.5 | Content text, not long reading |
| Black text on #439FA1 | 6.71:1 | AA | Lc 46.0 | Large or bold text, headings |
| #439FA1 text on white | 3.12:1 | AA large text | Lc 58.1 | Large or bold text, headings |
| #439FA1 text on black | 6.71:1 | AA | Lc -43.7 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C8DEDE
oklch(88.4% 0.023 196.7)
-
Step 300
300
#A2CACA
oklch(81% 0.042 196.3)
-
Step 400
400
#6CAEAF
oklch(70.7% 0.067 197)
-
Step 500
500 (this color)
#439FA1
oklch(64.9% 0.086 197.2)
-
Step 600
600
#048486
oklch(55.6% 0.094 196.7)
-
Step 700
700
#006F71
oklch(49.1% 0.084 197)
-
Step 800
800
#015B5D
oklch(42.8% 0.072 197.4)
-
Step 900
900
#124B4C
oklch(37.8% 0.057 196.7)
-
Step 950
950
#0D2C2C
oklch(27% 0.036 195.2)
#439FA1 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) | #9598A1 | 0.089 |
| Deuteranopia (no green cones) | #868DA2 | 0.083 |
| Tritanopia (no blue cones) | #00A49F | 0.027 |
| Achromatopsia (no color) | #929292 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439FA1
#439FA1
oklch(64.9% 0.086 197.2)
- #BE797C
#BE797C
oklch(64.9% 0.087 16.9)
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 #439FA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.023
- Sea #3C9992 ΔE 0.026
- Dull Teal #5F9E8F ΔE 0.032
- Persian Green #2A9D8F ΔE 0.033
- Grey Teal #5E9B8A ΔE 0.036
- Blue Green #0F9B8E ΔE 0.041
- Teal Green #0A9396 ΔE 0.048
- Dusty Teal #4C9085 ΔE 0.050
Use #439FA1 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.