#439BC4
Closest named color: Faded Blue (#658CBB). oklch(65.3% 0.103 231.6), rgb(67, 155, 196).
Aa
Black text reads best on this color (6.72:1).
About this color
#439BC4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.103 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.047 away. Black text reads best on it, at 6.72:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.72:1 |
| White text | 3.12:1 |
Values
| HEX | #439BC4 |
| RGB | rgb(67, 155, 196) |
| HSL | hsl(199, 52%, 52%) |
| OKLCH | oklch(65.3% 0.103 231.6) |
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 #439BC4 | 3.12:1 | AA large text | Lc -63.4 | Content text, not long reading |
| Black text on #439BC4 | 6.72:1 | AA | Lc 46.1 | Large or bold text, headings |
| #439BC4 text on white | 3.12:1 | AA large text | Lc 58.0 | Large or bold text, headings |
| #439BC4 text on black | 6.72:1 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE9
oklch(88.6% 0.028 232.7)
-
Step 300
300
#A0C7DC
oklch(80.8% 0.051 231.7)
-
Step 400
400
#6AAACA
oklch(70.7% 0.081 231.2)
-
Step 500
500 (this color)
#439BC4
oklch(65.3% 0.103 231.6)
-
Step 600
600
#037EA9
oklch(55.7% 0.112 231.4)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#015676
oklch(42.6% 0.087 232.4)
-
Step 900
900
#11475F
oklch(37.6% 0.068 232.3)
-
Step 950
950
#0D2A38
oklch(27% 0.043 232.5)
#439BC4 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) | #8799C6 | 0.070 |
| Deuteranopia (no green cones) | #758CC3 | 0.060 |
| Tritanopia (no blue cones) | #00A6A9 | 0.065 |
| Achromatopsia (no color) | #929292 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439BC4
#439BC4
oklch(65.3% 0.103 231.6)
- #C27D53
#C27D53
oklch(65.3% 0.103 51.4)
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 #439BC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.047
- Greyblue #77A1B5 ΔE 0.059
- Dusty Blue #5A86AD ΔE 0.060
- Cadet Blue #5F9EA0 ΔE 0.061
- Blue NCS #118AB2 ΔE 0.062
- Silver Lake Blue #778DA9 ΔE 0.063
- Cool Blue #4984B8 ΔE 0.064
- Turquoise Blue #06B1C4 ΔE 0.064
Use #439BC4 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.