#333CA2
Closest named color: Sapphire (#2138AB). oklch(41.5% 0.163 273.1), rgb(51, 60, 162).
Aa
White text reads best on this color (9.09:1).
About this color
#333CA2 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.163 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.028 away. White text reads best on it, at 9.09:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.30:1 |
| White text | 9.09:1 |
Values
| HEX | #333CA2 |
| RGB | rgb(51, 60, 162) |
| HSL | hsl(235, 52%, 42%) |
| OKLCH | oklch(41.5% 0.163 273.1) |
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 #333CA2 | 9.09:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #333CA2 | 2.30:1 | Fails | Lc 13.6 | Not readable |
| #333CA2 text on white | 9.09:1 | AAA | Lc 90.4 | Preferred for body text |
| #333CA2 text on black | 2.30:1 | Fails | Lc -11.9 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CDD8FD
oklch(88.6% 0.052 272.2)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8298FF
oklch(70.8% 0.152 272.8)
-
Step 500
500
#667AFD
oklch(63.2% 0.194 273)
-
Step 600
600
#505EEC
oklch(55.6% 0.212 273.1)
-
Step 700
700
#424CCD
oklch(49% 0.197 273.2)
-
Step 800
800 (this color)
#333CA2
oklch(41.5% 0.163 273.1)
-
Step 900
900
#2E3883
oklch(37.8% 0.125 273.1)
-
Step 950
950
#1A214D
oklch(26.9% 0.081 272.9)
#333CA2 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) | #004DA5 | 0.049 |
| Deuteranopia (no green cones) | #0043A0 | 0.039 |
| Tritanopia (no blue cones) | #005669 | 0.133 |
| Achromatopsia (no color) | #484848 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #333CA2
#333CA2
oklch(41.5% 0.163 273.1)
- #5C4A00
#5C4A00
oklch(41.6% 0.085 92.8)
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 #333CA2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.028
- Blueberry #464196 ΔE 0.038
- Cobalt #1E488F ΔE 0.048
- Dark Slate Blue #483D8B ΔE 0.050
- Blue Blue #2242C7 ΔE 0.063
- Indigo Blue #3A18B1 ΔE 0.063
- Majorelle Blue #3F37C9 ΔE 0.065
- Dusk Blue #26538D ΔE 0.073
Use #333CA2 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.