#425FE1
Closest named color: Neon Blue (#4361EE). oklch(54.1% 0.2 269.1), rgb(66, 95, 225).
Aa
White text reads best on this color (5.30:1).
About this color
#425FE1 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.200 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.020 away. White text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.200) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 3.95:1 |
| White text | 5.30:1 |
Values
| HEX | #425FE1 |
| RGB | rgb(66, 95, 225) |
| HSL | hsl(229, 73%, 57%) |
| OKLCH | oklch(54.1% 0.2 269.1) |
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 #425FE1 | 5.30:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #425FE1 | 3.95:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #425FE1 text on white | 5.30:1 | AA | Lc 75.9 | Fine for body text |
| #425FE1 text on black | 3.95:1 | AA large text | Lc -25.8 | 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 600.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CBD9FB
oklch(88.6% 0.049 267.7)
-
Step 300
300
#A9BFFC
oklch(81% 0.09 269)
-
Step 400
400
#7C9BFA
oklch(70.7% 0.144 268.9)
-
Step 500
500
#5D7EF7
oklch(63% 0.184 269.1)
-
Step 600
600 (this color)
#425FE1
oklch(54.1% 0.2 269.1)
-
Step 700
700
#3852C8
oklch(49.2% 0.185 269)
-
Step 800
800
#2E44A2
oklch(42.8% 0.154 268.9)
-
Step 900
900
#283A80
oklch(37.6% 0.12 269.1)
-
Step 950
950
#18234B
oklch(27.1% 0.075 269.3)
#425FE1 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) | #0073E5 | 0.053 |
| Deuteranopia (no green cones) | #0064DE | 0.038 |
| Tritanopia (no blue cones) | #007F97 | 0.160 |
| Achromatopsia (no color) | #6B6B6B | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425FE1
#425FE1
oklch(54.1% 0.2 269.1)
- #896B00
#896B00
oklch(54.2% 0.111 89.2)
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 #425FE1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.020
- Warm Blue #4B57DB ΔE 0.021
- Royal Blue #4169E1 ΔE 0.024
- Azul #1D5DEC ΔE 0.034
- Cerulean Blue #056EEE ΔE 0.046
- Dark Periwinkle #665FD1 ΔE 0.052
- Bright Blue #0165FC ΔE 0.053
- Iris #6258C4 ΔE 0.060
Use #425FE1 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.