#423749
Closest named color: Onyx (#343A40). oklch(35.6% 0.034 312.1), rgb(66, 55, 73).
Aa
White text reads best on this color (11.20:1).
About this color
#423749 is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.034 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.032 away. White text reads best on it, at 11.20:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.034) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.87:1 |
| White text | 11.20:1 |
Values
| HEX | #423749 |
| RGB | rgb(66, 55, 73) |
| HSL | hsl(277, 14%, 25%) |
| OKLCH | oklch(35.6% 0.034 312.1) |
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 #423749 | 11.20:1 | AAA | Lc -99.7 | Preferred for body text |
| Black text on #423749 | 1.87:1 | Fails | Lc 8.0 | Not readable |
| #423749 text on white | 11.20:1 | AAA | Lc 95.9 | Preferred for body text |
| #423749 text on black | 1.87:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#EBE8ED
oklch(93.5% 0.007 312.3)
-
Step 200
200
#DCD7E0
oklch(88.6% 0.013 310.5)
-
Step 300
300
#C6BCCD
oklch(80.9% 0.026 311.7)
-
Step 400
400
#A99AB3
oklch(70.7% 0.04 311.9)
-
Step 500
500
#9481A1
oklch(63.1% 0.052 311.5)
-
Step 600
600
#7F6A8C
oklch(55.7% 0.057 312.3)
-
Step 700
700
#6B5877
oklch(49.1% 0.054 312.1)
-
Step 800
800
#574860
oklch(42.6% 0.043 312.6)
-
Step 900
900 (this color)
#423749
oklch(35.6% 0.034 312.1)
-
Step 950
950
#2A242E
oklch(27.1% 0.02 311.8)
#423749 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) | #343A4A | 0.024 |
| Deuteranopia (no green cones) | #373B48 | 0.022 |
| Tritanopia (no blue cones) | #41393D | 0.024 |
| Achromatopsia (no color) | #3B3B3B | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #423749
#423749
oklch(35.6% 0.034 312.1)
- #35402D
#35402D
oklch(35.6% 0.035 132.4)
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 #423749, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.032
- Charcoal Grey #3C4142 ΔE 0.039
- Gunmetal #293241 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.052
- Space Cadet #2B2D42 ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.056
- Charcoal #264653 ΔE 0.057
- Prussian Blue #1D3557 ΔE 0.062
Use #423749 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.