#42567B
Closest named color: YInMn Blue (#415A77). oklch(45.3% 0.066 262.2), rgb(66, 86, 123).
Aa
White text reads best on this color (7.37:1).
About this color
#42567B is a medium-dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.066 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.015 away. White text reads best on it, at 7.37:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.84:1 |
| White text | 7.37:1 |
Values
| HEX | #42567B |
| RGB | rgb(66, 86, 123) |
| HSL | hsl(219, 30%, 37%) |
| OKLCH | oklch(45.3% 0.066 262.2) |
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 #42567B | 7.37:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #42567B | 2.84:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #42567B text on white | 7.37:1 | AAA | Lc 85.6 | Fine for body text |
| #42567B text on black | 2.84:1 | Fails | Lc -16.5 | 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 800.
-
Step 50
50
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D2D9E8
oklch(88.4% 0.022 265.8)
-
Step 300
300
#B3C1DA
oklch(80.8% 0.039 262.1)
-
Step 400
400
#8CA1C8
oklch(70.7% 0.062 262.7)
-
Step 500
500
#708ABA
oklch(63.2% 0.079 262.3)
-
Step 600
600
#5873A6
oklch(55.6% 0.086 262.5)
-
Step 700
700
#48608E
oklch(49% 0.08 262.7)
-
Step 800
800 (this color)
#42567B
oklch(45.3% 0.066 262.2)
-
Step 900
900
#33425D
oklch(37.8% 0.05 261.8)
-
Step 950
950
#1E2636
oklch(26.9% 0.032 263.8)
#42567B 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) | #48597D | 0.013 |
| Deuteranopia (no green cones) | #42537A | 0.009 |
| Tritanopia (no blue cones) | #2D5E63 | 0.059 |
| Achromatopsia (no color) | #565656 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42567B
#42567B
oklch(45.3% 0.066 262.2)
- #685228
#685228
oklch(45.2% 0.066 81.9)
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 #42567B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.015
- Dusk #4E5481 ΔE 0.021
- Dusty Grape #545775 ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.029
- Twilight #4E518B ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.037
- Denim #3B638C ΔE 0.041
- Dusk Blue #26538D ΔE 0.045
Use #42567B 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.