#334EB4
Closest named color: Blue Blue (#2242C7). oklch(46.5% 0.165 268.1), rgb(51, 78, 180).
Aa
White text reads best on this color (7.26:1).
About this color
#334EB4 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.165 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.046 away. White text reads best on it, at 7.26:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.88:1 |
| White text | 7.26:1 |
Values
| HEX | #334EB4 |
| RGB | rgb(51, 78, 180) |
| HSL | hsl(227, 56%, 45%) |
| OKLCH | oklch(46.5% 0.165 268.1) |
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 #334EB4 | 7.26:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #334EB4 | 2.88:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #334EB4 text on white | 7.26:1 | AAA | Lc 84.8 | Fine for body text |
| #334EB4 text on black | 2.88:1 | Fails | Lc -17.2 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CCD9F7
oklch(88.5% 0.044 266.9)
-
Step 300
300
#AABFF5
oklch(80.8% 0.08 268.1)
-
Step 400
400
#7F9DF0
oklch(70.8% 0.127 268)
-
Step 500
500
#6082EB
oklch(63.2% 0.162 268.1)
-
Step 600
600
#4868D9
oklch(55.5% 0.177 268.2)
-
Step 700
700 (this color)
#334EB4
oklch(46.5% 0.165 268.1)
-
Step 800
800
#304799
oklch(42.8% 0.137 268.3)
-
Step 900
900
#2A3C79
oklch(37.6% 0.106 268.5)
-
Step 950
950
#182447
oklch(27% 0.067 267.5)
#334EB4 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) | #005DB7 | 0.043 |
| Deuteranopia (no green cones) | #0051B2 | 0.031 |
| Tritanopia (no blue cones) | #006779 | 0.133 |
| Achromatopsia (no color) | #575757 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334EB4
#334EB4
oklch(46.5% 0.165 268.1)
- #6F5500
#6F5500
oklch(46.4% 0.095 88)
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 #334EB4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.046
- Majorelle Blue #3F37C9 ΔE 0.058
- Blueberry #464196 ΔE 0.059
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
- Sapphire #2138AB ΔE 0.061
- Cobalt #1E488F ΔE 0.067
- Dusk Blue #26538D ΔE 0.068
- Blurple #5539CC ΔE 0.070
Use #334EB4 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.