#425FBF
Closest named color: Mid Blue (#276AB3). oklch(51.5% 0.154 268), rgb(66, 95, 191).
Aa
White text reads best on this color (5.79:1).
About this color
#425FBF is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.154 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.042 away. White text reads best on it, at 5.79:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.62:1 |
| White text | 5.79:1 |
Values
| HEX | #425FBF |
| RGB | rgb(66, 95, 191) |
| HSL | hsl(226, 49%, 50%) |
| OKLCH | oklch(51.5% 0.154 268) |
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 #425FBF | 5.79:1 | AA | Lc -83.9 | Fine for body text |
| Black text on #425FBF | 3.62:1 | AA large text | Lc 25.4 | Dividers and decoration only |
| #425FBF text on white | 5.79:1 | AA | Lc 78.7 | Fine for body text |
| #425FBF text on black | 3.62:1 | AA large text | Lc -23.1 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ACC0F2
oklch(81% 0.074 267.7)
-
Step 400
400
#819DEB
oklch(70.7% 0.119 268.2)
-
Step 500
500
#6283E5
oklch(63.2% 0.152 267.9)
-
Step 600
600
#4A6AD3
oklch(55.6% 0.166 267.9)
-
Step 700
700 (this color)
#425FBF
oklch(51.5% 0.154 268)
-
Step 800
800
#314894
oklch(42.7% 0.128 268)
-
Step 900
900
#2B3D76
oklch(37.7% 0.1 268.2)
-
Step 950
950
#192445
oklch(26.9% 0.063 268.1)
#425FBF 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) | #296BC2 | 0.035 |
| Deuteranopia (no green cones) | #0060BD | 0.041 |
| Tritanopia (no blue cones) | #007586 | 0.127 |
| Achromatopsia (no color) | #656565 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #425FBF
#425FBF
oklch(51.5% 0.154 268)
- #816300
#816300
oklch(51.6% 0.105 87.8)
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 #425FBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.042
- Iris #6258C4 ΔE 0.045
- French Blue #436BAD ΔE 0.047
- Warm Blue #4B57DB ΔE 0.049
- Dark Periwinkle #665FD1 ΔE 0.056
- Royal Blue #4169E1 ΔE 0.056
- Slate Blue #6A5ACD ΔE 0.059
- Light Indigo #6D5ACF ΔE 0.065
Use #425FBF 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.