#004CE4
Closest named color: Vibrant Blue (#0339F8). oklch(49.2% 0.238 262.5), rgb(0, 76, 228).
Aa
White text reads best on this color (6.65:1).
About this color
#004CE4 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.238 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Vibrant Blue (#0339F8), ΔE 0.042 away. White text reads best on it, at 6.65:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.238) |
| Temperature | cool |
| Nearest name | Vibrant Blue (#0339F8) |
| Black text | 3.15:1 |
| White text | 6.65:1 |
Values
| HEX | #004CE4 |
| RGB | rgb(0, 76, 228) |
| HSL | hsl(220, 100%, 45%) |
| OKLCH | oklch(49.2% 0.238 262.5) |
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 #004CE4 | 6.65:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #004CE4 | 3.15:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #004CE4 text on white | 6.65:1 | AA | Lc 81.6 | Fine for body text |
| #004CE4 text on black | 3.15:1 | AA large text | Lc -20.3 | 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
#DFEAFF
oklch(93.5% 0.031 263.5)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A0C1FF
oklch(80.9% 0.095 262.7)
-
Step 400
400
#6C9EFF
oklch(70.7% 0.152 262.5)
-
Step 500
500
#4481FF
oklch(63% 0.198 262.7)
-
Step 600
600
#1561FF
oklch(55.6% 0.245 262.5)
-
Step 700
700 (this color)
#004CE4
oklch(49.2% 0.238 262.5)
-
Step 800
800
#0640B8
oklch(42.8% 0.197 262.5)
-
Step 900
900
#0F3991
oklch(37.8% 0.153 262.5)
-
Step 950
950
#0A2255
oklch(27% 0.098 262.7)
#004CE4 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) | #0066E9 | 0.060 |
| Deuteranopia (no green cones) | #0052E1 | 0.013 |
| Tritanopia (no blue cones) | #007692 | 0.179 |
| Achromatopsia (no color) | #5C5C5C | 0.238 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004CE4
#004CE4
oklch(49.2% 0.238 262.5)
- #7D5A00
#7D5A00
oklch(49.1% 0.101 82.2)
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 #004CE4, closest first.
No curated palette has a color within ΔE 0.04 of #004CE4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vibrant Blue #0339F8 ΔE 0.042
- Azul #1D5DEC ΔE 0.044
- Electric Blue #0652FF ΔE 0.045
- Blue Blue #2242C7 ΔE 0.051
- Vivid Blue #152EFF ΔE 0.057
- Light Royal Blue #3A2EFE ΔE 0.062
- Warm Blue #4B57DB ΔE 0.066
- Bright Blue #0165FC ΔE 0.068
Use #004CE4 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.