#323F53
Closest named color: Dark Grey Blue (#29465B). oklch(36.5% 0.039 258.9), rgb(50, 63, 83).
Aa
White text reads best on this color (10.65:1).
About this color
#323F53 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.039 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.024 away. White text reads best on it, at 10.65:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.97:1 |
| White text | 10.65:1 |
Values
| HEX | #323F53 |
| RGB | rgb(50, 63, 83) |
| HSL | hsl(216, 25%, 26%) |
| OKLCH | oklch(36.5% 0.039 258.9) |
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 #323F53 | 10.65:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #323F53 | 1.97:1 | Fails | Lc 9.2 | Not readable |
| #323F53 text on white | 10.65:1 | AAA | Lc 94.7 | Preferred for body text |
| #323F53 text on black | 1.97:1 | Fails | Lc -7.9 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D3DAE4
oklch(88.6% 0.016 257.2)
-
Step 300
300
#B6C1D4
oklch(80.8% 0.029 261.5)
-
Step 400
400
#8FA2BE
oklch(70.7% 0.046 258)
-
Step 500
500
#748BAE
oklch(63.2% 0.059 258.7)
-
Step 600
600
#5C7499
oklch(55.5% 0.065 258.9)
-
Step 700
700
#4C6283
oklch(49.2% 0.06 258.3)
-
Step 800
800
#3E506A
oklch(42.7% 0.049 257.5)
-
Step 900
900 (this color)
#323F53
oklch(36.5% 0.039 258.9)
-
Step 950
950
#1F2733
oklch(27.1% 0.025 258.3)
#323F53 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) | #384054 | 0.010 |
| Deuteranopia (no green cones) | #343D53 | 0.007 |
| Tritanopia (no blue cones) | #284346 | 0.033 |
| Achromatopsia (no color) | #3E3E3E | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #323F53
#323F53
oklch(36.5% 0.039 258.9)
- #4A3C27
#4A3C27
oklch(36.5% 0.039 77.2)
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 #323F53, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.024
- Charcoal #264653 ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.031
- Onyx #343A40 ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.047
- Midnight Green #073B4C ΔE 0.049
- Gunmetal #293241 ΔE 0.050
Use #323F53 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.