#2F4EB0
Closest named color: Blue Blue (#2242C7). oklch(46% 0.16 266.7), rgb(47, 78, 176).
Aa
White text reads best on this color (7.40:1).
About this color
#2F4EB0 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.160 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.049 away. White text reads best on it, at 7.40:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #2F4EB0 |
| RGB | rgb(47, 78, 176) |
| HSL | hsl(226, 58%, 44%) |
| OKLCH | oklch(46% 0.16 266.7) |
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 #2F4EB0 | 7.40:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #2F4EB0 | 2.83:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #2F4EB0 text on white | 7.40:1 | AAA | Lc 85.3 | Fine for body text |
| #2F4EB0 text on black | 2.83:1 | Fails | Lc -16.8 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CCD9F7
oklch(88.5% 0.044 266.9)
-
Step 300
300
#AAC0F4
oklch(80.9% 0.078 266.8)
-
Step 400
400
#7D9DEE
oklch(70.6% 0.124 266.8)
-
Step 500
500
#5D83E9
oklch(63.1% 0.159 266.5)
-
Step 600
600
#456AD7
oklch(55.6% 0.172 266.6)
-
Step 700
700 (this color)
#2F4EB0
oklch(46% 0.16 266.7)
-
Step 800
800
#2E4897
oklch(42.7% 0.133 266.9)
-
Step 900
900
#283D78
oklch(37.6% 0.104 266.7)
-
Step 950
950
#182446
oklch(26.9% 0.065 267.3)
#2F4EB0 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) | #005CB3 | 0.039 |
| Deuteranopia (no green cones) | #0050AE | 0.027 |
| Tritanopia (no blue cones) | #006677 | 0.128 |
| Achromatopsia (no color) | #555555 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4EB0
#2F4EB0
oklch(46% 0.16 266.7)
- #6F5300
#6F5300
oklch(45.9% 0.094 85.9)
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 #2F4EB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.049
- Blueberry #464196 ΔE 0.056
- Sapphire #2138AB ΔE 0.058
- Cobalt #1E488F ΔE 0.059
- Dusk Blue #26538D ΔE 0.061
- Majorelle Blue #3F37C9 ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.066
- Blue With A Hint Of Purple #533CC6 ΔE 0.067
Use #2F4EB0 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.