#425CCE
Closest named color: Warm Blue (#4B57DB). oklch(52.1% 0.178 269.5), rgb(66, 92, 206).
Aa
White text reads best on this color (5.74:1).
About this color
#425CCE is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.178 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.025 away. White text reads best on it, at 5.74:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.65:1 |
| White text | 5.74:1 |
Values
| HEX | #425CCE |
| RGB | rgb(66, 92, 206) |
| HSL | hsl(229, 59%, 53%) |
| OKLCH | oklch(52.1% 0.178 269.5) |
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 #425CCE | 5.74:1 | AA | Lc -83.6 | Fine for body text |
| Black text on #425CCE | 3.65:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #425CCE text on white | 5.74:1 | AA | Lc 78.3 | Fine for body text |
| #425CCE text on black | 3.65:1 | AA large text | Lc -23.5 | 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
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD8FA
oklch(88.4% 0.049 270)
-
Step 300
300
#AABFF9
oklch(80.9% 0.086 269)
-
Step 400
400
#7E9BF7
oklch(70.7% 0.139 269.4)
-
Step 500
500
#607FF3
oklch(63.1% 0.177 269.5)
-
Step 600
600
#4965E2
oklch(55.7% 0.192 269.6)
-
Step 700
700 (this color)
#425CCE
oklch(52.1% 0.178 269.5)
-
Step 800
800
#30459E
oklch(42.8% 0.147 269.2)
-
Step 900
900
#2A3B7E
oklch(37.8% 0.115 269.5)
-
Step 950
950
#18234A
oklch(27% 0.074 269.2)
#425CCE 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) | #006DD2 | 0.050 |
| Deuteranopia (no green cones) | #0060CC | 0.040 |
| Tritanopia (no blue cones) | #00788C | 0.146 |
| Achromatopsia (no color) | #666666 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425CCE
#425CCE
oklch(52.1% 0.178 269.5)
- #816500
#816500
oklch(52% 0.106 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 #425CCE, closest first.
No curated palette has a color within ΔE 0.04 of #425CCE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.025
- Royal Blue #4169E1 ΔE 0.042
- Iris #6258C4 ΔE 0.045
- Dark Periwinkle #665FD1 ΔE 0.050
- Neon Blue #4361EE ΔE 0.050
- Azul #1D5DEC ΔE 0.053
- Slate Blue #6A5ACD ΔE 0.054
- Light Indigo #6D5ACF ΔE 0.059
Use #425CCE 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.