#424FCD
Closest named color: Warm Blue (#4B57DB). oklch(49.6% 0.193 272.6), rgb(66, 79, 205).
Aa
White text reads best on this color (6.49:1).
About this color
#424FCD is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.193 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.032 away. White text reads best on it, at 6.49:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.193) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.23:1 |
| White text | 6.49:1 |
Values
| HEX | #424FCD |
| RGB | rgb(66, 79, 205) |
| HSL | hsl(234, 58%, 53%) |
| OKLCH | oklch(49.6% 0.193 272.6) |
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 #424FCD | 6.49:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #424FCD | 3.23:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #424FCD text on white | 6.49:1 | AA | Lc 81.7 | Fine for body text |
| #424FCD text on black | 3.23:1 | AA large text | Lc -20.2 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CDD8FC
oklch(88.5% 0.051 271.9)
-
Step 300
300
#ACBDFE
oklch(80.9% 0.094 272.8)
-
Step 400
400
#8298FD
oklch(70.7% 0.15 272.8)
-
Step 500
500
#657BFB
oklch(63.2% 0.191 272.5)
-
Step 600
600
#4F5FEA
oklch(55.5% 0.208 272.6)
-
Step 700
700 (this color)
#424FCD
oklch(49.6% 0.193 272.6)
-
Step 800
800
#3541A4
oklch(42.8% 0.159 272.5)
-
Step 900
900
#2D3882
oklch(37.6% 0.124 272.6)
-
Step 950
950
#1A224C
oklch(27.1% 0.078 272.1)
#424FCD 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) | #0064D1 | 0.058 |
| Deuteranopia (no green cones) | #0058CB | 0.045 |
| Tritanopia (no blue cones) | #006F86 | 0.158 |
| Achromatopsia (no color) | #5E5E5E | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424FCD
#424FCD
oklch(49.6% 0.193 272.6)
- #766000
#766000
oklch(49.6% 0.102 93.2)
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 #424FCD, closest first.
No curated palette has a color within ΔE 0.04 of #424FCD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.032
- Blue With A Hint Of Purple #533CC6 ΔE 0.044
- Blurple #5539CC ΔE 0.048
- Majorelle Blue #3F37C9 ΔE 0.051
- Blue Blue #2242C7 ΔE 0.051
- Bluey Purple #6241C7 ΔE 0.053
- Iris #6258C4 ΔE 0.055
- Azul #1D5DEC ΔE 0.061
Use #424FCD 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.