#003AFD
Closest named color: Vibrant Blue (#0339F8). oklch(49.1% 0.283 264), rgb(0, 58, 253).
Aa
White text reads best on this color (6.94:1).
About this color
#003AFD is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.283 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Vibrant Blue (#0339F8), ΔE 0.008 away. White text reads best on it, at 6.94:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.283) |
| Temperature | cool |
| Nearest name | Vibrant Blue (#0339F8) |
| Black text | 3.02:1 |
| White text | 6.94:1 |
Values
| HEX | #003AFD |
| RGB | rgb(0, 58, 253) |
| HSL | hsl(226, 100%, 50%) |
| OKLCH | oklch(49.1% 0.283 264) |
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 #003AFD | 6.94:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #003AFD | 3.02:1 | AA large text | Lc 21.9 | Dividers and decoration only |
| #003AFD text on white | 6.94:1 | AA | Lc 82.2 | Fine for body text |
| #003AFD text on black | 3.02:1 | AA large text | Lc -19.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C7DAFF
oklch(88.6% 0.055 263.7)
-
Step 300
300
#A1C0FF
oklch(80.8% 0.096 264.1)
-
Step 400
400
#6F9DFF
oklch(70.7% 0.152 263.9)
-
Step 500
500
#4980FF
oklch(63% 0.198 264)
-
Step 600
600
#235FFF
oklch(55.6% 0.245 264.1)
-
Step 700
700 (this color)
#003AFD
oklch(49.1% 0.283 264)
-
Step 800
800
#0333CC
oklch(42.7% 0.235 264)
-
Step 900
900
#0A31A0
oklch(37.6% 0.183 264.1)
-
Step 950
950
#071F5E
oklch(27.1% 0.116 264)
#003AFD 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) | #0065FF | 0.083 |
| Deuteranopia (no green cones) | #004DFA | 0.032 |
| Tritanopia (no blue cones) | #00779B | 0.213 |
| Achromatopsia (no color) | #5A5A5A | 0.284 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #003AFD
#003AFD
oklch(49.1% 0.283 264)
- #7B5B00
#7B5B00
oklch(49.1% 0.101 84.7)
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 #003AFD, closest first.
No curated palette has a color within ΔE 0.04 of #003AFD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vibrant Blue #0339F8 ΔE 0.008
- Vivid Blue #152EFF ΔE 0.015
- Light Royal Blue #3A2EFE ΔE 0.038
- Rich Blue #021BF9 ΔE 0.038
- Electric Blue #0652FF ΔE 0.043
- Blue #0000FF ΔE 0.049
- Primary Blue #0804F9 ΔE 0.050
- Strong Blue #0C06F7 ΔE 0.050
Use #003AFD 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.