#439FF1
Closest named color: Chefchaouen Blue (#4895EF). oklch(68.5% 0.149 248.7), rgb(67, 159, 241).
Aa
Black text reads best on this color (7.46:1).
About this color
#439FF1 is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.149 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.026 away. Black text reads best on it, at 7.46:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.46:1 |
| White text | 2.81:1 |
Values
| HEX | #439FF1 |
| RGB | rgb(67, 159, 241) |
| HSL | hsl(208, 86%, 60%) |
| OKLCH | oklch(68.5% 0.149 248.7) |
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 #439FF1 | 2.81:1 | Fails | Lc -59.0 | Large or bold text, headings |
| Black text on #439FF1 | 7.46:1 | AAA | Lc 50.3 | Large or bold text, headings |
| #439FF1 text on white | 2.81:1 | Fails | Lc 53.7 | Large or bold text, headings |
| #439FF1 text on black | 7.46:1 | AAA | Lc -48.1 | 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
#EFF6FE
oklch(97% 0.013 251.6)
-
Step 100
100
#DDECFC
oklch(93.7% 0.027 249.9)
-
Step 200
200
#BFDDFB
oklch(88.5% 0.052 248.4)
-
Step 300
300
#91C6FB
oklch(80.9% 0.094 249)
-
Step 400
400 (this color)
#439FF1
oklch(68.5% 0.149 248.7)
-
Step 500
500
#008DEC
oklch(63.1% 0.173 248.9)
-
Step 600
600
#0077C7
oklch(55.7% 0.152 248.5)
-
Step 700
700
#0063A9
oklch(49% 0.136 249.1)
-
Step 800
800
#00518B
oklch(42.6% 0.117 248.8)
-
Step 900
900
#004475
oklch(37.8% 0.103 248.3)
-
Step 950
950
#002848
oklch(27% 0.073 248.1)
#439FF1 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) | #7AA3F4 | 0.054 |
| Deuteranopia (no green cones) | #6193EF | 0.037 |
| Tritanopia (no blue cones) | #00B3BD | 0.111 |
| Achromatopsia (no color) | #9A9A9A | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439FF1
#439FF1
oklch(68.5% 0.149 248.7)
- #D48603
#D48603
oklch(68.5% 0.149 69)
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 #439FF1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.026
- Cornflower Blue #6495ED ΔE 0.034
- Dark Sky Blue #448EE4 ΔE 0.047
- Dodger Blue #1E90FF ΔE 0.054
- Soft Blue #6488EA ΔE 0.062
- Periwinkle Blue #8F99FB ΔE 0.080
- Deep Sky Blue #00BFFF ΔE 0.084
- Faded Blue #658CBB ΔE 0.086
Use #439FF1 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.