#424FBB
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(48.1% 0.169 273.1), rgb(66, 79, 187).
Aa
White text reads best on this color (6.84:1).
About this color
#424FBB is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.169 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blue With A Hint Of Purple (#533CC6), ΔE 0.047 away. White text reads best on it, at 6.84:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 3.06:1 |
| White text | 6.84:1 |
Values
| HEX | #424FBB |
| RGB | rgb(66, 79, 187) |
| HSL | hsl(234, 48%, 50%) |
| OKLCH | oklch(48.1% 0.169 273.1) |
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 #424FBB | 6.84:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #424FBB | 3.06:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #424FBB text on white | 6.84:1 | AA | Lc 83.2 | Fine for body text |
| #424FBB text on black | 3.06:1 | AA large text | Lc -18.7 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CFD8F8
oklch(88.5% 0.045 273)
-
Step 300
300
#AFBEF6
oklch(81% 0.081 272.8)
-
Step 400
400
#869AF2
oklch(70.8% 0.131 272.9)
-
Step 500
500
#6A7EED
oklch(63.1% 0.167 273)
-
Step 600
600
#5464DB
oklch(55.6% 0.181 273.2)
-
Step 700
700 (this color)
#424FBB
oklch(48.1% 0.169 273.1)
-
Step 800
800
#38449A
oklch(42.7% 0.14 273)
-
Step 900
900
#303A7A
oklch(37.6% 0.109 273.4)
-
Step 950
950
#1C2348
oklch(27.1% 0.069 272.9)
#424FBB 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) | #0060BF | 0.054 |
| Deuteranopia (no green cones) | #0055B9 | 0.047 |
| Tritanopia (no blue cones) | #00697D | 0.141 |
| Achromatopsia (no color) | #5A5A5A | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424FBB
#424FBB
oklch(48.1% 0.169 273.1)
- #715C00
#715C00
oklch(48.2% 0.099 93.4)
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 #424FBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue With A Hint Of Purple #533CC6 ΔE 0.047
- Blue Blue #2242C7 ΔE 0.053
- Warm Blue #4B57DB ΔE 0.055
- Iris #6258C4 ΔE 0.055
- Majorelle Blue #3F37C9 ΔE 0.056
- Blurple #5539CC ΔE 0.056
- Bluey Purple #6241C7 ΔE 0.057
- Blueberry #464196 ΔE 0.066
Use #424FBB 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.