#2F4EA6
Closest named color: Cobalt (#1E488F). oklch(45.2% 0.147 266), rgb(47, 78, 166).
Aa
White text reads best on this color (7.60:1).
About this color
#2F4EA6 is a medium-dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.147 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.045 away. White text reads best on it, at 7.60:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.76:1 |
| White text | 7.60:1 |
Values
| HEX | #2F4EA6 |
| RGB | rgb(47, 78, 166) |
| HSL | hsl(224, 56%, 42%) |
| OKLCH | oklch(45.2% 0.147 266) |
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 #2F4EA6 | 7.60:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #2F4EA6 | 2.76:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #2F4EA6 text on white | 7.60:1 | AAA | Lc 86.0 | Fine for body text |
| #2F4EA6 text on black | 2.76:1 | Fails | Lc -16.0 | 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 800.
-
Step 50
50
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9FA
oklch(88.5% 0.048 266)
-
Step 300
300
#A7C0F9
oklch(80.9% 0.086 266.1)
-
Step 400
400
#789DF6
oklch(70.7% 0.137 265.9)
-
Step 500
500
#5781F2
oklch(63% 0.176 266.2)
-
Step 600
600
#3E68E1
oklch(55.7% 0.19 265.9)
-
Step 700
700
#3155C3
oklch(49% 0.177 266.2)
-
Step 800
800 (this color)
#2F4EA6
oklch(45.2% 0.147 266)
-
Step 900
900
#253C7D
oklch(37.6% 0.114 266.3)
-
Step 950
950
#162449
oklch(27% 0.071 266.2)
#2F4EA6 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) | #1359A9 | 0.032 |
| Deuteranopia (no green cones) | #004FA4 | 0.028 |
| Tritanopia (no blue cones) | #006372 | 0.118 |
| Achromatopsia (no color) | #545454 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4EA6
#2F4EA6
oklch(45.2% 0.147 266)
- #6D5100
#6D5100
oklch(45.2% 0.093 85.5)
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 #2F4EA6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.045
- Dusk Blue #26538D ΔE 0.046
- Blueberry #464196 ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.055
- Sapphire #2138AB ΔE 0.059
- Twilight #4E518B ΔE 0.060
- Blue Blue #2242C7 ΔE 0.062
- Light Navy #155084 ΔE 0.062
Use #2F4EA6 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.