#42476A
Closest named color: Dark Grey Blue (#29465B). oklch(40.9% 0.059 277.2), rgb(66, 71, 106).
Aa
White text reads best on this color (8.97:1).
About this color
#42476A is a dark, muted blue. In OKLCH its lightness is 41%, its chroma 0.059 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.045 away. White text reads best on it, at 8.97:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.34:1 |
| White text | 8.97:1 |
Values
| HEX | #42476A |
| RGB | rgb(66, 71, 106) |
| HSL | hsl(233, 23%, 34%) |
| OKLCH | oklch(40.9% 0.059 277.2) |
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 #42476A | 8.97:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #42476A | 2.34:1 | Fails | Lc 13.4 | Not readable |
| #42476A text on white | 8.97:1 | AAA | Lc 90.6 | Preferred for body text |
| #42476A text on black | 2.34:1 | Fails | Lc -11.7 | Not readable |
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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E6
oklch(88.5% 0.019 279.5)
-
Step 300
300
#BBBFD7
oklch(80.9% 0.034 278.1)
-
Step 400
400
#979EC3
oklch(70.7% 0.055 276.5)
-
Step 500
500
#7E86B4
oklch(63.1% 0.07 276.6)
-
Step 600
600
#686FA0
oklch(55.6% 0.077 277.4)
-
Step 700
700
#565D89
oklch(49.1% 0.071 276.5)
-
Step 800
800 (this color)
#42476A
oklch(40.9% 0.059 277.2)
-
Step 900
900
#3B3F5A
oklch(37.6% 0.047 277.4)
-
Step 950
950
#232535
oklch(27% 0.03 278.7)
#42476A 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) | #3C4B6B | 0.014 |
| Deuteranopia (no green cones) | #394869 | 0.014 |
| Tritanopia (no blue cones) | #374E54 | 0.052 |
| Achromatopsia (no color) | #494949 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42476A
#42476A
oklch(40.9% 0.059 277.2)
- #534A22
#534A22
oklch(40.8% 0.059 96.9)
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 #42476A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.045
- Dusk #4E5481 ΔE 0.054
- YInMn Blue #415A77 ΔE 0.057
- Charcoal #264653 ΔE 0.057
- Dusty Grape #545775 ΔE 0.058
- Light Navy #155084 ΔE 0.060
- Twilight #4E518B ΔE 0.062
- Dark Slate Gray #2F4F4F ΔE 0.065
Use #42476A 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.