#323B4B
Closest named color: Onyx (#343A40). oklch(35.1% 0.031 261.8), rgb(50, 59, 75).
Aa
White text reads best on this color (11.27:1).
About this color
#323B4B is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.031 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.019 away. White text reads best on it, at 11.27:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.86:1 |
| White text | 11.27:1 |
Values
| HEX | #323B4B |
| RGB | rgb(50, 59, 75) |
| HSL | hsl(218, 20%, 25%) |
| OKLCH | oklch(35.1% 0.031 261.8) |
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 #323B4B | 11.27:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #323B4B | 1.86:1 | Fails | Lc 7.9 | Not readable |
| #323B4B text on white | 11.27:1 | AAA | Lc 96.0 | Preferred for body text |
| #323B4B text on black | 1.86:1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D4D9E2
oklch(88.4% 0.013 262.4)
-
Step 300
300
#B9C1D0
oklch(80.9% 0.023 263.2)
-
Step 400
400
#94A1B8
oklch(70.6% 0.037 261.9)
-
Step 500
500
#7A8AA6
oklch(63.1% 0.046 261.6)
-
Step 600
600
#637492
oklch(55.7% 0.051 261.7)
-
Step 700
700
#52617C
oklch(49.1% 0.047 262)
-
Step 800
800
#434F65
oklch(42.6% 0.04 262.4)
-
Step 900
900 (this color)
#323B4B
oklch(35.1% 0.031 261.8)
-
Step 950
950
#212730
oklch(27.1% 0.019 258.4)
#323B4B 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) | #363C4C | 0.008 |
| Deuteranopia (no green cones) | #333A4B | 0.003 |
| Tritanopia (no blue cones) | #2B3E40 | 0.027 |
| Achromatopsia (no color) | #3B3B3B | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #323B4B
#323B4B
oklch(35.1% 0.031 261.8)
- #433928
#433928
oklch(35% 0.031 80.6)
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 #323B4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.019
- Dark Blue Grey #1F3B4D ΔE 0.025
- Charcoal Grey #3C4142 ΔE 0.033
- Gunmetal #293241 ΔE 0.036
- Charcoal #264653 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.044
- Midnight Green #073B4C ΔE 0.044
Use #323B4B 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.