#439FDE
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.5% 0.127 242.1), rgb(67, 159, 222).
Aa
Black text reads best on this color (7.25:1).
About this color
#439FDE is a medium-light, moderately saturated blue. In OKLCH its lightness is 68%, its chroma 0.127 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.041 away. Black text reads best on it, at 7.25:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.25:1 |
| White text | 2.89:1 |
Values
| HEX | #439FDE |
| RGB | rgb(67, 159, 222) |
| HSL | hsl(204, 70%, 57%) |
| OKLCH | oklch(67.5% 0.127 242.1) |
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 #439FDE | 2.89:1 | Fails | Lc -60.3 | Content text, not long reading |
| Black text on #439FDE | 7.25:1 | AAA | Lc 49.1 | Large or bold text, headings |
| #439FDE text on white | 2.89:1 | Fails | Lc 54.9 | Large or bold text, headings |
| #439FDE text on black | 7.25:1 | AAA | Lc -46.9 | 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 400.
-
Step 50
50
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DDECF8
oklch(93.5% 0.023 241.9)
-
Step 200
200
#C1DDF4
oklch(88.4% 0.044 243)
-
Step 300
300
#93C7F0
oklch(80.8% 0.08 242.7)
-
Step 400
400 (this color)
#439FDE
oklch(67.5% 0.127 242.1)
-
Step 500
500
#0092DB
oklch(63.2% 0.149 241.7)
-
Step 600
600
#007AB9
oklch(55.5% 0.132 242.1)
-
Step 700
700
#00679D
oklch(49.2% 0.117 242)
-
Step 800
800
#005481
oklch(42.7% 0.101 241.9)
-
Step 900
900
#00466D
oklch(37.8% 0.09 242.2)
-
Step 950
950
#002943
oklch(27% 0.065 242.6)
#439FDE 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) | #82A0E1 | 0.062 |
| Deuteranopia (no green cones) | #6D91DD | 0.049 |
| Tritanopia (no blue cones) | #00AFB5 | 0.090 |
| Achromatopsia (no color) | #989898 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439FDE
#439FDE
oklch(67.5% 0.127 242.1)
- #CE8339
#CE8339
oklch(67.5% 0.128 62)
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 #439FDE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.041
- Cornflower Blue #6495ED ΔE 0.047
- Dark Sky Blue #448EE4 ΔE 0.050
- Faded Blue #658CBB ΔE 0.066
- Soft Blue #6488EA ΔE 0.071
- Dodger Blue #1E90FF ΔE 0.073
- Turquoise Blue #06B1C4 ΔE 0.075
- Greyblue #77A1B5 ΔE 0.076
Use #439FDE 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.