#323D59
Closest named color: Dark Grey Blue (#29465B). oklch(36.3% 0.051 267.4), rgb(50, 61, 89).
Aa
White text reads best on this color (10.78:1).
About this color
#323D59 is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.051 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.029 away. White text reads best on it, at 10.78:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.94:1 |
| White text | 10.78:1 |
Values
| HEX | #323D59 |
| RGB | rgb(50, 61, 89) |
| HSL | hsl(223, 28%, 27%) |
| OKLCH | oklch(36.3% 0.051 267.4) |
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 #323D59 | 10.78:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #323D59 | 1.94:1 | Fails | Lc 9.0 | Not readable |
| #323D59 text on white | 10.78:1 | AAA | Lc 95.0 | Preferred for body text |
| #323D59 text on black | 1.94:1 | Fails | Lc -7.7 | 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 900.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D3D9E8
oklch(88.5% 0.022 268.4)
-
Step 300
300
#B6C0DA
oklch(80.8% 0.038 268.8)
-
Step 400
400
#90A0C8
oklch(70.7% 0.061 267.8)
-
Step 500
500
#7588B9
oklch(63.1% 0.077 267.8)
-
Step 600
600
#5D71A5
oklch(55.5% 0.085 267.5)
-
Step 700
700
#4D5F8E
oklch(49.1% 0.079 267.5)
-
Step 800
800
#3F4E73
oklch(42.8% 0.065 266.8)
-
Step 900
900 (this color)
#323D59
oklch(36.3% 0.051 267.4)
-
Step 950
950
#1F2636
oklch(26.9% 0.032 266.1)
#323D59 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) | #333F5A | 0.007 |
| Deuteranopia (no green cones) | #303C58 | 0.005 |
| Tritanopia (no blue cones) | #254347 | 0.046 |
| Achromatopsia (no color) | #3D3D3D | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #323D59
#323D59
oklch(36.3% 0.051 267.4)
- #493C1C
#493C1C
oklch(36.2% 0.051 87.6)
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 #323D59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.035
- Charcoal #264653 ΔE 0.036
- Prussian Blue #1D3557 ΔE 0.041
- Onyx #343A40 ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.048
- Midnight Green #073B4C ΔE 0.052
- Gunmetal #293241 ΔE 0.052
Use #323D59 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.