#323A8F
Closest named color: Dark Slate Blue (#483D8B). oklch(39.4% 0.139 274.1), rgb(50, 58, 143).
Aa
White text reads best on this color (9.82:1).
About this color
#323A8F is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.139 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.037 away. White text reads best on it, at 9.82:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.13:1 |
| White text | 9.82:1 |
Values
| HEX | #323A8F |
| RGB | rgb(50, 58, 143) |
| HSL | hsl(235, 48%, 38%) |
| OKLCH | oklch(39.4% 0.139 274.1) |
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 #323A8F | 9.82:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #323A8F | 2.13:1 | Fails | Lc 11.5 | Not readable |
| #323A8F text on white | 9.82:1 | AAA | Lc 92.4 | Preferred for body text |
| #323A8F text on black | 2.13:1 | Fails | Lc -10.0 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FF
oklch(93.6% 0.03 273.6)
-
Step 200
200
#CDD7FF
oklch(88.4% 0.056 274.2)
-
Step 300
300
#ADBCFF
oklch(80.8% 0.096 274.3)
-
Step 400
400
#8497FF
oklch(70.7% 0.153 274)
-
Step 500
500
#6878FF
oklch(63.1% 0.199 274.1)
-
Step 600
600
#5158F7
oklch(55.5% 0.232 274)
-
Step 700
700
#4346D7
oklch(49% 0.216 274.1)
-
Step 800
800
#373BAE
oklch(42.7% 0.179 274.3)
-
Step 900
900 (this color)
#323A8F
oklch(39.4% 0.139 274.1)
-
Step 950
950
#1A2050
oklch(26.9% 0.087 273.6)
#323A8F 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) | #004892 | 0.047 |
| Deuteranopia (no green cones) | #003F8D | 0.041 |
| Tritanopia (no blue cones) | #004F5E | 0.118 |
| Achromatopsia (no color) | #434343 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #323A8F
#323A8F
oklch(39.4% 0.139 274.1)
- #544500
#544500
oklch(39.4% 0.081 94.8)
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 #323A8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.037
- Blueberry #464196 ΔE 0.039
- Cobalt #1E488F ΔE 0.039
- Sapphire #2138AB ΔE 0.050
- Twilight Blue #0A437A ΔE 0.056
- Light Navy #155084 ΔE 0.068
- Dusk Blue #26538D ΔE 0.068
- Indigo Blue #3A18B1 ΔE 0.078
Use #323A8F 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.