#2F4BDB
Closest named color: Blue Blue (#2242C7). oklch(49.2% 0.22 268), rgb(47, 75, 219).
Aa
White text reads best on this color (6.66:1).
About this color
#2F4BDB is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.220 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.042 away. White text reads best on it, at 6.66:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.220) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.15:1 |
| White text | 6.66:1 |
Values
| HEX | #2F4BDB |
| RGB | rgb(47, 75, 219) |
| HSL | hsl(230, 70%, 52%) |
| OKLCH | oklch(49.2% 0.22 268) |
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 #2F4BDB | 6.66:1 | AA | Lc -87.2 | Fine for body text |
| Black text on #2F4BDB | 3.15:1 | AA large text | Lc 21.9 | Dividers and decoration only |
| #2F4BDB text on white | 6.66:1 | AA | Lc 82.1 | Fine for body text |
| #2F4BDB text on black | 3.15:1 | AA large text | Lc -19.8 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A6BFFF
oklch(80.9% 0.095 267.8)
-
Step 400
400
#789BFF
oklch(70.8% 0.152 267.9)
-
Step 500
500
#577DFF
oklch(63.1% 0.197 268)
-
Step 600
600
#3B5DFB
oklch(55.6% 0.237 268)
-
Step 700
700 (this color)
#2F4BDB
oklch(49.2% 0.22 268)
-
Step 800
800
#273FB1
oklch(42.8% 0.182 268.1)
-
Step 900
900
#22378C
oklch(37.6% 0.143 268.1)
-
Step 950
950
#142152
oklch(26.9% 0.091 268.4)
#2F4BDB 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) | #0065E0 | 0.058 |
| Deuteranopia (no green cones) | #0054D8 | 0.028 |
| Tritanopia (no blue cones) | #00728C | 0.172 |
| Achromatopsia (no color) | #5C5C5C | 0.221 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4BDB
#2F4BDB
oklch(49.2% 0.22 268)
- #795D00
#795D00
oklch(49.3% 0.101 88.1)
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 #2F4BDB, closest first.
No curated palette has a color within ΔE 0.04 of #2F4BDB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.042
- Warm Blue #4B57DB ΔE 0.045
- Azul #1D5DEC ΔE 0.047
- Majorelle Blue #3F37C9 ΔE 0.050
- Electric Blue #0652FF ΔE 0.060
- Vibrant Blue #0339F8 ΔE 0.061
- Blurple #5539CC ΔE 0.061
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
Use #2F4BDB 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.