#425AE5
Closest named color: Warm Blue (#4B57DB). oklch(53.5% 0.211 270.1), rgb(66, 90, 229).
Aa
White text reads best on this color (5.48:1).
About this color
#425AE5 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.211 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.019 away. White text reads best on it, at 5.48:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.211) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.82:1 |
| White text | 5.48:1 |
Values
| HEX | #425AE5 |
| RGB | rgb(66, 90, 229) |
| HSL | hsl(231, 76%, 58%) |
| OKLCH | oklch(53.5% 0.211 270.1) |
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 #425AE5 | 5.48:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #425AE5 | 3.82:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #425AE5 text on white | 5.48:1 | AA | Lc 76.8 | Fine for body text |
| #425AE5 text on black | 3.82:1 | AA large text | Lc -24.9 | 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
#E2E9FD
oklch(93.5% 0.028 270.4)
-
Step 200
200
#CBD8FD
oklch(88.4% 0.053 270)
-
Step 300
300
#A9BEFF
oklch(80.9% 0.095 270.4)
-
Step 400
400
#7C99FF
oklch(70.6% 0.153 270.2)
-
Step 500
500
#5E7CFD
oklch(63.1% 0.194 270.1)
-
Step 600
600 (this color)
#425AE5
oklch(53.5% 0.211 270.1)
-
Step 700
700
#394FCE
oklch(49.2% 0.197 269.9)
-
Step 800
800
#2F42A6
oklch(42.8% 0.162 269.9)
-
Step 900
900
#293984
oklch(37.8% 0.127 270.1)
-
Step 950
950
#18224D
oklch(27% 0.08 270.4)
#425AE5 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) | #0071EA | 0.058 |
| Deuteranopia (no green cones) | #0062E2 | 0.039 |
| Tritanopia (no blue cones) | #007D97 | 0.168 |
| Achromatopsia (no color) | #696969 | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425AE5
#425AE5
oklch(53.5% 0.211 270.1)
- #866900
#866900
oklch(53.4% 0.109 89.6)
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 #425AE5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.019
- Neon Blue #4361EE ΔE 0.021
- Azul #1D5DEC ΔE 0.030
- Royal Blue #4169E1 ΔE 0.036
- Bright Blue #0165FC ΔE 0.051
- Cerulean Blue #056EEE ΔE 0.052
- Electric Blue #0652FF ΔE 0.059
- Dark Periwinkle #665FD1 ΔE 0.059
Use #425AE5 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.