#2B4DC5
Closest named color: Blue Blue (#2242C7). oklch(47.4% 0.191 266.6), rgb(43, 77, 197).
Aa
White text reads best on this color (7.06:1).
About this color
#2B4DC5 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.191 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.028 away. White text reads best on it, at 7.06:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #2B4DC5 |
| RGB | rgb(43, 77, 197) |
| HSL | hsl(227, 64%, 47%) |
| OKLCH | oklch(47.4% 0.191 266.6) |
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 #2B4DC5 | 7.06:1 | AAA | Lc -88.8 | Fine for body text |
| Black text on #2B4DC5 | 2.97:1 | Fails | Lc 20.2 | Dividers and decoration only |
| #2B4DC5 text on white | 7.06:1 | AAA | Lc 83.9 | Fine for body text |
| #2B4DC5 text on black | 2.97:1 | Fails | Lc -18.1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FC
oklch(88.5% 0.051 267)
-
Step 300
300
#A5BFFD
oklch(80.8% 0.093 266.7)
-
Step 400
400
#769CFC
oklch(70.7% 0.147 266.4)
-
Step 500
500
#557FFA
oklch(63% 0.189 266.7)
-
Step 600
600
#3C65E9
oklch(55.6% 0.205 266.5)
-
Step 700
700 (this color)
#2B4DC5
oklch(47.4% 0.191 266.6)
-
Step 800
800
#2744A4
oklch(42.6% 0.159 266.7)
-
Step 900
900
#233B82
oklch(37.7% 0.123 266.4)
-
Step 950
950
#15234C
oklch(27% 0.078 266.9)
#2B4DC5 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) | #0060C9 | 0.046 |
| Deuteranopia (no green cones) | #0051C3 | 0.023 |
| Tritanopia (no blue cones) | #006C81 | 0.150 |
| Achromatopsia (no color) | #585858 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4DC5
#2B4DC5
oklch(47.4% 0.191 266.6)
- #745700
#745700
oklch(47.4% 0.097 86.1)
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 #2B4DC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.028
- Majorelle Blue #3F37C9 ΔE 0.046
- Blue With A Hint Of Purple #533CC6 ΔE 0.057
- Warm Blue #4B57DB ΔE 0.058
- Blurple #5539CC ΔE 0.063
- Sapphire #2138AB ΔE 0.067
- Azul #1D5DEC ΔE 0.070
- Bluey Purple #6241C7 ΔE 0.075
Use #2B4DC5 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.