#425FD3
Closest named color: Warm Blue (#4B57DB). oklch(53% 0.181 268.8), rgb(66, 95, 211).
Aa
White text reads best on this color (5.51:1).
About this color
#425FD3 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.181 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.024 away. White text reads best on it, at 5.51:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.80:1 |
| White text | 5.51:1 |
Values
| HEX | #425FD3 |
| RGB | rgb(66, 95, 211) |
| HSL | hsl(228, 62%, 54%) |
| OKLCH | oklch(53% 0.181 268.8) |
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 #425FD3 | 5.51:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #425FD3 | 3.80:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #425FD3 text on white | 5.51:1 | AA | Lc 77.1 | Fine for body text |
| #425FD3 text on black | 3.80:1 | AA large text | Lc -24.7 | 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 600.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD9F8
oklch(88.6% 0.045 268.7)
-
Step 300
300
#ABBFF6
oklch(80.9% 0.081 269)
-
Step 400
400
#7F9CF2
oklch(70.7% 0.13 268.8)
-
Step 500
500
#6081ED
oklch(63.1% 0.166 268.6)
-
Step 600
600 (this color)
#425FD3
oklch(53% 0.181 268.8)
-
Step 700
700
#3B55BF
oklch(49.2% 0.169 268.9)
-
Step 800
800
#30469A
oklch(42.6% 0.14 268.7)
-
Step 900
900
#2A3C7B
oklch(37.7% 0.109 268.7)
-
Step 950
950
#192448
oklch(27.1% 0.068 268.7)
#425FD3 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) | #0070D7 | 0.050 |
| Deuteranopia (no green cones) | #0062D1 | 0.039 |
| Tritanopia (no blue cones) | #007B90 | 0.147 |
| Achromatopsia (no color) | #696969 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425FD3
#425FD3
oklch(53% 0.181 268.8)
- #856700
#856700
oklch(52.9% 0.108 88.5)
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 #425FD3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.024
- Royal Blue #4169E1 ΔE 0.031
- Neon Blue #4361EE ΔE 0.042
- Dark Periwinkle #665FD1 ΔE 0.047
- Iris #6258C4 ΔE 0.048
- Azul #1D5DEC ΔE 0.048
- Slate Blue #6A5ACD ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.058
Use #425FD3 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.