#4233B2
Closest named color: Majorelle Blue (#3F37C9). oklch(42.6% 0.191 279.9), rgb(66, 51, 178).
Aa
White text reads best on this color (8.94:1).
About this color
#4233B2 is a dark, vivid blue. In OKLCH its lightness is 43%, its chroma 0.191 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Majorelle Blue (#3F37C9), ΔE 0.038 away. White text reads best on it, at 8.94:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Majorelle Blue (#3F37C9) |
| Black text | 2.34:1 |
| White text | 8.94:1 |
Values
| HEX | #4233B2 |
| RGB | rgb(66, 51, 178) |
| HSL | hsl(247, 55%, 45%) |
| OKLCH | oklch(42.6% 0.191 279.9) |
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 #4233B2 | 8.94:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #4233B2 | 2.34:1 | Fails | Lc 14.2 | Not readable |
| #4233B2 text on white | 8.94:1 | AAA | Lc 89.8 | Fine for body text |
| #4233B2 text on black | 2.34:1 | Fails | Lc -12.5 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E8FF
oklch(93.6% 0.031 279.9)
-
Step 200
200
#D1D6FF
oklch(88.5% 0.057 279.7)
-
Step 300
300
#B4BAFF
oklch(80.9% 0.098 280.1)
-
Step 400
400
#8F93FF
oklch(70.7% 0.156 280)
-
Step 500
500
#7673FF
oklch(63.1% 0.202 279.9)
-
Step 600
600
#624DFD
oklch(55.6% 0.247 280)
-
Step 700
700
#523CDD
oklch(49.1% 0.23 279.9)
-
Step 800
800 (this color)
#4233B2
oklch(42.6% 0.191 279.9)
-
Step 900
900
#37308D
oklch(37.8% 0.148 280)
-
Step 950
950
#1F1D52
oklch(26.9% 0.094 279.7)
#4233B2 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) | #004EB6 | 0.072 |
| Deuteranopia (no green cones) | #0044B0 | 0.062 |
| Tritanopia (no blue cones) | #00566F | 0.157 |
| Achromatopsia (no color) | #494949 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4233B2
#4233B2
oklch(42.6% 0.191 279.9)
- #5A4F00
#5A4F00
oklch(42.5% 0.088 100.1)
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 #4233B2, closest first.
No curated palette has a color within ΔE 0.04 of #4233B2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Majorelle Blue #3F37C9 ΔE 0.038
- Sapphire #2138AB ΔE 0.044
- Indigo Blue #3A18B1 ΔE 0.045
- Blue With A Hint Of Purple #533CC6 ΔE 0.048
- Blurple #5539CC ΔE 0.054
- Blueberry #464196 ΔE 0.056
- Blue Blue #2242C7 ΔE 0.056
- Imperial Purple #480CA8 ΔE 0.056
Use #4233B2 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.