#004FDF
Closest named color: Azul (#1D5DEC). oklch(49.2% 0.228 262), rgb(0, 79, 223).
Aa
White text reads best on this color (6.59:1).
About this color
#004FDF is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.228 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.042 away. White text reads best on it, at 6.59:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.228) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.18:1 |
| White text | 6.59:1 |
Values
| HEX | #004FDF |
| RGB | rgb(0, 79, 223) |
| HSL | hsl(219, 100%, 44%) |
| OKLCH | oklch(49.2% 0.228 262) |
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 #004FDF | 6.59:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #004FDF | 3.18:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #004FDF text on white | 6.59:1 | AA | Lc 81.5 | Fine for body text |
| #004FDF text on black | 3.18:1 | AA large text | Lc -20.4 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEAFF
oklch(93.5% 0.031 263.5)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6B9EFF
oklch(70.7% 0.153 262.2)
-
Step 500
500
#4282FF
oklch(63.2% 0.198 262)
-
Step 600
600
#0E61FF
oklch(55.5% 0.245 262.1)
-
Step 700
700 (this color)
#004FDF
oklch(49.2% 0.228 262)
-
Step 800
800
#0642B4
oklch(42.8% 0.189 262)
-
Step 900
900
#0F3A8E
oklch(37.8% 0.147 261.9)
-
Step 950
950
#0A2353
oklch(27% 0.093 261.7)
#004FDF 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) | #0067E4 | 0.057 |
| Deuteranopia (no green cones) | #0053DC | 0.010 |
| Tritanopia (no blue cones) | #007690 | 0.172 |
| Achromatopsia (no color) | #5D5D5D | 0.229 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004FDF
#004FDF
oklch(49.2% 0.228 262)
- #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 #004FDF, closest first.
No curated palette has a color within ΔE 0.04 of #004FDF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.042
- Blue Blue #2242C7 ΔE 0.048
- Electric Blue #0652FF ΔE 0.050
- Vibrant Blue #0339F8 ΔE 0.052
- Warm Blue #4B57DB ΔE 0.062
- Vivid Blue #152EFF ΔE 0.067
- Bright Blue #0165FC ΔE 0.068
- Majorelle Blue #3F37C9 ΔE 0.068
Use #004FDF 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.