#425BCA
Closest named color: Warm Blue (#4B57DB). oklch(51.6% 0.174 269.7), rgb(66, 91, 202).
Aa
White text reads best on this color (5.86:1).
About this color
#425BCA is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.174 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.030 away. White text reads best on it, at 5.86:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.58:1 |
| White text | 5.86:1 |
Values
| HEX | #425BCA |
| RGB | rgb(66, 91, 202) |
| HSL | hsl(229, 56%, 53%) |
| OKLCH | oklch(51.6% 0.174 269.7) |
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 #425BCA | 5.86:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #425BCA | 3.58:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #425BCA text on white | 5.86:1 | AA | Lc 78.9 | Fine for body text |
| #425BCA text on black | 3.58:1 | AA large text | Lc -22.9 | 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 700.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CDD8F9
oklch(88.4% 0.047 270.8)
-
Step 300
300
#ABBFF8
oklch(81% 0.084 269.5)
-
Step 400
400
#7F9BF5
oklch(70.7% 0.136 269.6)
-
Step 500
500
#617FF0
oklch(63% 0.172 269.7)
-
Step 600
600
#4A65DF
oklch(55.5% 0.188 269.8)
-
Step 700
700 (this color)
#425BCA
oklch(51.6% 0.174 269.7)
-
Step 800
800
#31459D
oklch(42.7% 0.145 269.6)
-
Step 900
900
#2B3B7C
oklch(37.7% 0.112 269.9)
-
Step 950
950
#192349
oklch(27% 0.072 270)
#425BCA 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) | #006BCE | 0.049 |
| Deuteranopia (no green cones) | #005FC8 | 0.041 |
| Tritanopia (no blue cones) | #007689 | 0.144 |
| Achromatopsia (no color) | #656565 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425BCA
#425BCA
oklch(51.6% 0.174 269.7)
- #7F6400
#7F6400
oklch(51.6% 0.105 90.1)
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 #425BCA, closest first.
No curated palette has a color within ΔE 0.04 of #425BCA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.030
- Iris #6258C4 ΔE 0.044
- Royal Blue #4169E1 ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.052
- Slate Blue #6A5ACD ΔE 0.055
- Neon Blue #4361EE ΔE 0.057
- Azul #1D5DEC ΔE 0.059
- Mid Blue #276AB3 ΔE 0.060
Use #425BCA 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.