#334FB5
Closest named color: Blue Blue (#2242C7). oklch(46.8% 0.165 267.8), rgb(51, 79, 181).
Aa
White text reads best on this color (7.17:1).
About this color
#334FB5 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, 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 7.17:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.165) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #334FB5 |
| RGB | rgb(51, 79, 181) |
| HSL | hsl(227, 56%, 45%) |
| OKLCH | oklch(46.8% 0.165 267.8) |
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 #334FB5 | 7.17:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #334FB5 | 2.92:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #334FB5 text on white | 7.17:1 | AAA | Lc 84.4 | Fine for body text |
| #334FB5 text on black | 2.92:1 | Fails | Lc -17.5 | 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
#7E9DF0
oklch(70.7% 0.127 267.6)
-
Step 500
500
#5F82EB
oklch(63.2% 0.162 267.7)
-
Step 600
600
#4768DA
oklch(55.6% 0.178 268)
-
Step 700
700 (this color)
#334FB5
oklch(46.8% 0.165 267.8)
-
Step 800
800
#2F4799
oklch(42.7% 0.137 267.9)
-
Step 900
900
#293D79
oklch(37.8% 0.105 267.4)
-
Step 950
950
#182447
oklch(27% 0.067 267.5)
#334FB5 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) | #005EB8 | 0.043 |
| Deuteranopia (no green cones) | #0052B3 | 0.031 |
| Tritanopia (no blue cones) | #00687A | 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°).
- #334FB5
#334FB5
oklch(46.8% 0.165 267.8)
- #715600
#715600
oklch(46.8% 0.096 87.4)
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 #334FB5, 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 0.059
- Blueberry #464196 ΔE 0.061
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
- Sapphire #2138AB ΔE 0.064
- Cobalt #1E488F ΔE 0.069
- Dusk Blue #26538D ΔE 0.069
- Denim Blue #3B5B92 ΔE 0.070
Use #334FB5 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.