#439AB4
Closest named color: Cadet Blue (#5F9EA0). oklch(64.4% 0.091 220.6), rgb(67, 154, 180).
Aa
Black text reads best on this color (6.51:1).
About this color
#439AB4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.091 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.042 away. Black text reads best on it, at 6.51:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.51:1 |
| White text | 3.22:1 |
Values
| HEX | #439AB4 |
| RGB | rgb(67, 154, 180) |
| HSL | hsl(194, 46%, 48%) |
| OKLCH | oklch(64.4% 0.091 220.6) |
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 #439AB4 | 3.22:1 | AA large text | Lc -64.6 | Content text, not long reading |
| Black text on #439AB4 | 6.51:1 | AA | Lc 44.9 | Non-text elements, placeholder text |
| #439AB4 text on white | 3.22:1 | AA large text | Lc 59.2 | Large or bold text, headings |
| #439AB4 text on black | 6.51:1 | AA | Lc -42.5 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE5
oklch(88.4% 0.025 222.6)
-
Step 300
300
#A2C8D5
oklch(81% 0.044 220.7)
-
Step 400
400
#6CABC0
oklch(70.6% 0.072 221.2)
-
Step 500
500 (this color)
#439AB4
oklch(64.4% 0.091 220.6)
-
Step 600
600
#0D809C
oklch(55.6% 0.099 220.9)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#06586C
oklch(42.7% 0.076 220.8)
-
Step 900
900
#144958
oklch(37.8% 0.06 220.7)
-
Step 950
950
#0E2B33
oklch(27.1% 0.037 218.8)
#439AB4 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) | #8A96B5 | 0.075 |
| Deuteranopia (no green cones) | #7A8AB4 | 0.068 |
| Tritanopia (no blue cones) | #00A2A2 | 0.049 |
| Achromatopsia (no color) | #8F8F8F | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439AB4
#439AB4
oklch(64.4% 0.091 220.6)
- #BD7A62
#BD7A62
oklch(64.4% 0.091 40.5)
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 #439AB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.042
- Faded Blue #658CBB ΔE 0.052
- Sea #3C9992 ΔE 0.053
- Dusty Blue #5A86AD ΔE 0.056
- Blue Grey #758DA3 ΔE 0.057
- Greyblue #77A1B5 ΔE 0.057
- Blue NCS #118AB2 ΔE 0.057
- Teal Green #0A9396 ΔE 0.057
Use #439AB4 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.