#439BF7
Closest named color: Chefchaouen Blue (#4895EF). oklch(68% 0.16 252.2), rgb(67, 155, 247).
Aa
Black text reads best on this color (7.27:1).
About this color
#439BF7 is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.160 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.018 away. Black text reads best on it, at 7.27:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.27:1 |
| White text | 2.88:1 |
Values
| HEX | #439BF7 |
| RGB | rgb(67, 155, 247) |
| HSL | hsl(211, 92%, 62%) |
| OKLCH | oklch(68% 0.16 252.2) |
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 #439BF7 | 2.88:1 | Fails | Lc -60.1 | Content text, not long reading |
| Black text on #439BF7 | 7.27:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #439BF7 text on white | 2.88:1 | Fails | Lc 54.8 | Large or bold text, headings |
| #439BF7 text on black | 7.27:1 | AAA | Lc -47.0 | 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
#DCECFD
oklch(93.6% 0.029 249.8)
-
Step 200
200
#BFDCFE
oklch(88.4% 0.056 252.5)
-
Step 300
300
#92C5FF
oklch(80.9% 0.099 252.2)
-
Step 400
400 (this color)
#439BF7
oklch(68% 0.16 252.2)
-
Step 500
500
#008AF7
oklch(63.1% 0.19 252.2)
-
Step 600
600
#0074D1
oklch(55.7% 0.167 252.1)
-
Step 700
700
#0061B1
oklch(49.1% 0.148 252.3)
-
Step 800
800
#004F92
oklch(42.6% 0.129 252.3)
-
Step 900
900
#00427B
oklch(37.7% 0.113 252.1)
-
Step 950
950
#00274C
oklch(27.1% 0.08 251.6)
#439BF7 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) | #70A1FB | 0.046 |
| Deuteranopia (no green cones) | #5590F5 | 0.029 |
| Tritanopia (no blue cones) | #00B1BD | 0.122 |
| Achromatopsia (no color) | #989898 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439BF7
#439BF7
oklch(68% 0.16 252.2)
- #CE8700
#CE8700
oklch(68% 0.145 72.3)
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 #439BF7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.018
- Cornflower Blue #6495ED ΔE 0.031
- Dodger Blue #1E90FF ΔE 0.041
- Dark Sky Blue #448EE4 ΔE 0.041
- Soft Blue #6488EA ΔE 0.053
- Periwinkle Blue #8F99FB ΔE 0.078
- Lavender Blue #8B88F8 ΔE 0.084
- Perrywinkle #8F8CE7 ΔE 0.084
Use #439BF7 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.