#439BFD
Closest named color: Chefchaouen Blue (#4895EF). oklch(68.3% 0.167 253.5), rgb(67, 155, 253).
Aa
Black text reads best on this color (7.34:1).
About this color
#439BFD is a medium-light, vivid blue. In OKLCH its lightness is 68%, its chroma 0.167 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.023 away. Black text reads best on it, at 7.34:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.34:1 |
| White text | 2.85:1 |
Values
| HEX | #439BFD |
| RGB | rgb(67, 155, 253) |
| HSL | hsl(212, 98%, 63%) |
| OKLCH | oklch(68.3% 0.167 253.5) |
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 #439BFD | 2.85:1 | Fails | Lc -59.6 | Large or bold text, headings |
| Black text on #439BFD | 7.34:1 | AAA | Lc 49.7 | Large or bold text, headings |
| #439BFD text on white | 2.85:1 | Fails | Lc 54.3 | Large or bold text, headings |
| #439BFD text on black | 7.34:1 | AAA | Lc -47.5 | 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
#EFF6FF
oklch(97% 0.014 254.6)
-
Step 100
100
#DCECFE
oklch(93.7% 0.03 251.3)
-
Step 200
200
#BFDCFF
oklch(88.5% 0.058 253.3)
-
Step 300
300
#94C4FF
oklch(80.8% 0.098 254)
-
Step 400
400 (this color)
#439BFD
oklch(68.3% 0.167 253.5)
-
Step 500
500
#0088FC
oklch(63% 0.198 253.6)
-
Step 600
600
#0072D5
oklch(55.5% 0.175 253.6)
-
Step 700
700
#0060B4
oklch(49.1% 0.153 253.4)
-
Step 800
800
#004E95
oklch(42.6% 0.134 253.6)
-
Step 900
900
#00417E
oklch(37.7% 0.118 253.6)
-
Step 950
950
#00264E
oklch(27% 0.085 253.5)
#439BFD 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) | #6DA2FF | 0.044 |
| Deuteranopia (no green cones) | #4F91FB | 0.026 |
| Tritanopia (no blue cones) | #00B2C0 | 0.127 |
| Achromatopsia (no color) | #999999 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439BFD
#439BFD
oklch(68.3% 0.167 253.5)
- #CE8900
#CE8900
oklch(68.3% 0.145 73.6)
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 #439BFD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.023
- Cornflower Blue #6495ED ΔE 0.035
- Dodger Blue #1E90FF ΔE 0.038
- Dark Sky Blue #448EE4 ΔE 0.046
- Soft Blue #6488EA ΔE 0.055
- Periwinkle Blue #8F99FB ΔE 0.077
- Lavender Blue #8B88F8 ΔE 0.082
- Perrywinkle #8F8CE7 ΔE 0.085
Use #439BFD 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.