#2F4DB7
Closest named color: Blue Blue (#2242C7). oklch(46.4% 0.171 267.2), rgb(47, 77, 183).
Aa
White text reads best on this color (7.32:1).
About this color
#2F4DB7 is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.171 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.039 away. White text reads best on it, at 7.32:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.86:1 |
| White text | 7.32:1 |
Values
| HEX | #2F4DB7 |
| RGB | rgb(47, 77, 183) |
| HSL | hsl(227, 59%, 45%) |
| OKLCH | oklch(46.4% 0.171 267.2) |
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 #2F4DB7 | 7.32:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #2F4DB7 | 2.86:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #2F4DB7 text on white | 7.32:1 | AAA | Lc 84.9 | Fine for body text |
| #2F4DB7 text on black | 2.86:1 | Fails | Lc -17.1 | 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
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD9F9
oklch(88.6% 0.046 267.9)
-
Step 300
300
#A9C0F7
oklch(81% 0.082 266.9)
-
Step 400
400
#7C9DF3
oklch(70.8% 0.132 267.1)
-
Step 500
500
#5C81EF
oklch(63.1% 0.17 267.4)
-
Step 600
600
#4468DD
oklch(55.6% 0.183 267.3)
-
Step 700
700 (this color)
#2F4DB7
oklch(46.4% 0.171 267.2)
-
Step 800
800
#2D479B
oklch(42.8% 0.141 267.2)
-
Step 900
900
#273C7C
oklch(37.6% 0.112 267.2)
-
Step 950
950
#172448
oklch(27% 0.069 266.8)
#2F4DB7 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) | #005DBB | 0.043 |
| Deuteranopia (no green cones) | #0050B5 | 0.027 |
| Tritanopia (no blue cones) | #00677A | 0.136 |
| Achromatopsia (no color) | #565656 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4DB7
#2F4DB7
oklch(46.4% 0.171 267.2)
- #705500
#705500
oklch(46.5% 0.095 87.2)
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 #2F4DB7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.039
- Majorelle Blue #3F37C9 ΔE 0.054
- Sapphire #2138AB ΔE 0.058
- Blue With A Hint Of Purple #533CC6 ΔE 0.060
- Blueberry #464196 ΔE 0.063
- Blurple #5539CC ΔE 0.069
- Cobalt #1E488F ΔE 0.069
- Warm Blue #4B57DB ΔE 0.072
Use #2F4DB7 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.