#323D63
Closest named color: Dark Grey Blue (#29465B). oklch(36.9% 0.067 270.6), rgb(50, 61, 99).
Aa
White text reads best on this color (10.58:1).
About this color
#323D63 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.067 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.036 away. White text reads best on it, at 10.58:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.98:1 |
| White text | 10.58:1 |
Values
| HEX | #323D63 |
| RGB | rgb(50, 61, 99) |
| HSL | hsl(227, 33%, 29%) |
| OKLCH | oklch(36.9% 0.067 270.6) |
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 #323D63 | 10.58:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #323D63 | 1.98:1 | Fails | Lc 9.4 | Not readable |
| #323D63 text on white | 10.58:1 | AAA | Lc 94.5 | Preferred for body text |
| #323D63 text on black | 1.98:1 | Fails | Lc -8.1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9EC
oklch(88.6% 0.027 269.6)
-
Step 300
300
#B4C0E2
oklch(81% 0.05 269.9)
-
Step 400
400
#8D9ED4
oklch(70.6% 0.082 270.7)
-
Step 500
500
#7286C8
oklch(63.2% 0.102 270.4)
-
Step 600
600
#5B6EB5
oklch(55.5% 0.113 271)
-
Step 700
700
#4B5C9C
oklch(49.1% 0.105 270.9)
-
Step 800
800
#3D4B7E
oklch(42.6% 0.087 270.8)
-
Step 900
900 (this color)
#323D63
oklch(36.9% 0.067 270.6)
-
Step 950
950
#1E253B
oklch(26.9% 0.042 269.9)
#323D63 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) | #2F4165 | 0.012 |
| Deuteranopia (no green cones) | #2A3D62 | 0.011 |
| Tritanopia (no blue cones) | #20454B | 0.060 |
| Achromatopsia (no color) | #3F3F3F | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #323D63
#323D63
oklch(36.9% 0.067 270.6)
- #4D3E0D
#4D3E0D
oklch(37% 0.067 91.1)
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 #323D63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.044
- Charcoal #264653 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.048
- Twilight Blue #0A437A ΔE 0.050
- Marine Blue #01386A ΔE 0.052
- Onyx #343A40 ΔE 0.060
- Midnight Green #073B4C ΔE 0.063
Use #323D63 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.