#333B98
Closest named color: Blueberry (#464196). oklch(40.5% 0.15 273.8), rgb(51, 59, 152).
Aa
White text reads best on this color (9.46:1).
About this color
#333B98 is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.150 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.034 away. White text reads best on it, at 9.46:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.21:1 |
| White text | 9.46:1 |
Values
| HEX | #333B98 |
| RGB | rgb(51, 59, 152) |
| HSL | hsl(235, 50%, 40%) |
| OKLCH | oklch(40.5% 0.15 273.8) |
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 #333B98 | 9.46:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #333B98 | 2.21:1 | Fails | Lc 12.5 | Not readable |
| #333B98 text on white | 9.46:1 | AAA | Lc 91.4 | Preferred for body text |
| #333B98 text on black | 2.21:1 | Fails | Lc -10.9 | 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 800.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CFD8FA
oklch(88.6% 0.048 273.7)
-
Step 300
300
#AEBDFA
oklch(80.9% 0.088 273.6)
-
Step 400
400
#8698F7
oklch(70.6% 0.14 274.1)
-
Step 500
500
#6A7CF4
oklch(63.2% 0.179 273.7)
-
Step 600
600
#5461E3
oklch(55.6% 0.195 273.9)
-
Step 700
700
#454FC5
oklch(49.1% 0.182 273.9)
-
Step 800
800 (this color)
#333B98
oklch(40.5% 0.15 273.8)
-
Step 900
900
#30397E
oklch(37.7% 0.116 273.9)
-
Step 950
950
#1C224A
oklch(27% 0.074 274)
#333B98 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) | #004A9B | 0.048 |
| Deuteranopia (no green cones) | #004196 | 0.041 |
| Tritanopia (no blue cones) | #005263 | 0.125 |
| Achromatopsia (no color) | #464646 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #333B98
#333B98
oklch(40.5% 0.15 273.8)
- #584700
#584700
oklch(40.4% 0.083 93.2)
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 #333B98, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.034
- Sapphire #2138AB ΔE 0.038
- Dark Slate Blue #483D8B ΔE 0.040
- Cobalt #1E488F ΔE 0.041
- Twilight Blue #0A437A ΔE 0.067
- Dusk Blue #26538D ΔE 0.069
- Indigo Blue #3A18B1 ΔE 0.069
- Light Navy #155084 ΔE 0.072
Use #333B98 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.