#439EC9
Closest named color: Faded Blue (#658CBB). oklch(66.3% 0.107 232.1), rgb(67, 158, 201).
Aa
Black text reads best on this color (6.97:1).
About this color
#439EC9 is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.107 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.053 away. Black text reads best on it, at 6.97:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.97:1 |
| White text | 3.01:1 |
Values
| HEX | #439EC9 |
| RGB | rgb(67, 158, 201) |
| HSL | hsl(199, 55%, 53%) |
| OKLCH | oklch(66.3% 0.107 232.1) |
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 #439EC9 | 3.01:1 | AA large text | Lc -61.9 | Content text, not long reading |
| Black text on #439EC9 | 6.97:1 | AA | Lc 47.5 | Large or bold text, headings |
| #439EC9 text on white | 3.01:1 | AA large text | Lc 56.6 | Large or bold text, headings |
| #439EC9 text on black | 6.97:1 | AA | Lc -45.2 | Large or bold text, headings |
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
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C7DDE9
oklch(88.5% 0.029 231.5)
-
Step 300
300
#A0C7DD
oklch(80.9% 0.052 233)
-
Step 400
400
#68AACC
oklch(70.7% 0.084 232.1)
-
Step 500
500 (this color)
#439EC9
oklch(66.3% 0.107 232.1)
-
Step 600
600
#007EAA
oklch(55.7% 0.113 231.8)
-
Step 700
700
#006A90
oklch(49.2% 0.1 232)
-
Step 800
800
#005676
oklch(42.6% 0.087 232.3)
-
Step 900
900
#0F4860
oklch(37.8% 0.069 231.4)
-
Step 950
950
#0C2A38
oklch(27% 0.044 231.9)
#439EC9 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) | #899CCB | 0.071 |
| Deuteranopia (no green cones) | #768FC8 | 0.060 |
| Tritanopia (no blue cones) | #00AAAC | 0.069 |
| Achromatopsia (no color) | #959595 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439EC9
#439EC9
oklch(66.3% 0.107 232.1)
- #C67F53
#C67F53
oklch(66.1% 0.106 51.8)
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 #439EC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.053
- Greyblue #77A1B5 ΔE 0.057
- Turquoise Blue #06B1C4 ΔE 0.058
- Cadet Blue #5F9EA0 ΔE 0.064
- Dark Sky Blue #448EE4 ΔE 0.068
- Chefchaouen Blue #4895EF ΔE 0.068
- Silver Lake Blue #778DA9 ΔE 0.069
- Dusty Blue #5A86AD ΔE 0.069
Use #439EC9 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.