#323A99
Closest named color: Sapphire (#2138AB). oklch(40.3% 0.153 273.6), rgb(50, 58, 153).
Aa
White text reads best on this color (9.54:1).
About this color
#323A99 is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.153 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.036 away. White text reads best on it, at 9.54:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.20:1 |
| White text | 9.54:1 |
Values
| HEX | #323A99 |
| RGB | rgb(50, 58, 153) |
| HSL | hsl(235, 51%, 40%) |
| OKLCH | oklch(40.3% 0.153 273.6) |
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 #323A99 | 9.54:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #323A99 | 2.20:1 | Fails | Lc 12.3 | Not readable |
| #323A99 text on white | 9.54:1 | AAA | Lc 91.6 | Preferred for body text |
| #323A99 text on black | 2.20:1 | Fails | Lc -10.8 | 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 800.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED8FB
oklch(88.6% 0.049 272.8)
-
Step 300
300
#AEBDFB
oklch(80.9% 0.089 273.7)
-
Step 400
400
#8598F9
oklch(70.7% 0.143 273.8)
-
Step 500
500
#697BF6
oklch(63.1% 0.183 273.7)
-
Step 600
600
#5360E5
oklch(55.5% 0.199 273.7)
-
Step 700
700
#444FC7
oklch(49.2% 0.185 273.5)
-
Step 800
800 (this color)
#323A99
oklch(40.3% 0.153 273.6)
-
Step 900
900
#2F3980
oklch(37.8% 0.119 273.3)
-
Step 950
950
#1B224B
oklch(27% 0.076 273)
#323A99 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) | #004A9C | 0.049 |
| Deuteranopia (no green cones) | #004197 | 0.040 |
| Tritanopia (no blue cones) | #005264 | 0.126 |
| Achromatopsia (no color) | #454545 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #323A99
#323A99
oklch(40.3% 0.153 273.6)
- #574700
#574700
oklch(40.3% 0.083 94.2)
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 #323A99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.036
- Blueberry #464196 ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.043
- Cobalt #1E488F ΔE 0.043
- Indigo Blue #3A18B1 ΔE 0.066
- Twilight Blue #0A437A ΔE 0.068
- Dusk Blue #26538D ΔE 0.071
- Light Navy #155084 ΔE 0.074
Use #323A99 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.