#0028FF
Closest named color: Vivid Blue (#152EFF). oklch(47.4% 0.299 264.2), rgb(0, 40, 255).
Aa
White text reads best on this color (7.64:1).
About this color
#0028FF is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.299 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Vivid Blue (#152EFF), ΔE 0.013 away. White text reads best on it, at 7.64:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.299) |
| Temperature | cool |
| Nearest name | Vivid Blue (#152EFF) |
| Black text | 2.74:1 |
| White text | 7.64:1 |
Values
| HEX | #0028FF |
| RGB | rgb(0, 40, 255) |
| HSL | hsl(231, 100%, 50%) |
| OKLCH | oklch(47.4% 0.299 264.2) |
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 #0028FF | 7.64:1 | AAA | Lc -89.1 | Fine for body text |
| Black text on #0028FF | 2.74:1 | Fails | Lc 19.9 | Dividers and decoration only |
| #0028FF text on white | 7.64:1 | AAA | Lc 84.2 | Fine for body text |
| #0028FF text on black | 2.74:1 | Fails | Lc -17.8 | 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
#A2C0FF
oklch(80.9% 0.096 264.7)
-
Step 400
400
#709DFF
oklch(70.7% 0.152 264.2)
-
Step 500
500
#4A80FF
oklch(63.1% 0.198 264.2)
-
Step 600
600
#245FFF
oklch(55.6% 0.245 264.2)
-
Step 700
700 (this color)
#0028FF
oklch(47.4% 0.299 264.2)
-
Step 800
800
#022ED3
oklch(42.8% 0.247 264.2)
-
Step 900
900
#082EA5
oklch(37.6% 0.193 264.3)
-
Step 950
950
#061E61
oklch(27.1% 0.122 264.1)
#0028FF 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) | #0060FF | 0.095 |
| Deuteranopia (no green cones) | #0046FC | 0.043 |
| Tritanopia (no blue cones) | #007299 | 0.223 |
| Achromatopsia (no color) | #535353 | 0.300 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0028FF
#0028FF
oklch(47.4% 0.299 264.2)
- #755600
#755600
oklch(47.3% 0.097 84.3)
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 #0028FF, closest first.
No curated palette has a color within ΔE 0.04 of #0028FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vivid Blue #152EFF ΔE 0.013
- Rich Blue #021BF9 ΔE 0.018
- Vibrant Blue #0339F8 ΔE 0.023
- Blue #0000FF ΔE 0.026
- Primary Blue #0804F9 ΔE 0.028
- Strong Blue #0C06F7 ΔE 0.029
- Light Royal Blue #3A2EFE ΔE 0.045
- Pure Blue #0203E2 ΔE 0.061
Use #0028FF 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.