#2B4BC1
Closest named color: Blue Blue (#2242C7). oklch(46.6% 0.188 266.9), rgb(43, 75, 193).
Aa
White text reads best on this color (7.29:1).
About this color
#2B4BC1 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.188 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.025 away. White text reads best on it, at 7.29:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.188) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.87:1 |
| White text | 7.29:1 |
Values
| HEX | #2B4BC1 |
| RGB | rgb(43, 75, 193) |
| HSL | hsl(227, 64%, 46%) |
| OKLCH | oklch(46.6% 0.188 266.9) |
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 #2B4BC1 | 7.29:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #2B4BC1 | 2.87:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #2B4BC1 text on white | 7.29:1 | AAA | Lc 84.7 | Fine for body text |
| #2B4BC1 text on black | 2.87:1 | Fails | Lc -17.3 | 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
#A6BFFC
oklch(80.8% 0.091 267.1)
-
Step 400
400
#779CFB
oklch(70.7% 0.145 266.6)
-
Step 500
500
#5780F9
oklch(63.3% 0.186 266.9)
-
Step 600
600
#3E65E8
oklch(55.6% 0.203 266.9)
-
Step 700
700 (this color)
#2B4BC1
oklch(46.6% 0.188 266.9)
-
Step 800
800
#2945A3
oklch(42.8% 0.156 266.9)
-
Step 900
900
#243B81
oklch(37.7% 0.122 266.8)
-
Step 950
950
#15234C
oklch(27% 0.078 266.9)
#2B4BC1 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) | #005EC5 | 0.047 |
| Deuteranopia (no green cones) | #0050BF | 0.024 |
| Tritanopia (no blue cones) | #00697F | 0.146 |
| Achromatopsia (no color) | #565656 | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4BC1
#2B4BC1
oklch(46.6% 0.188 266.9)
- #715500
#715500
oklch(46.6% 0.095 86.4)
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 #2B4BC1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.025
- Majorelle Blue #3F37C9 ΔE 0.044
- Blue With A Hint Of Purple #533CC6 ΔE 0.057
- Sapphire #2138AB ΔE 0.060
- Blurple #5539CC ΔE 0.063
- Warm Blue #4B57DB ΔE 0.065
- Bluey Purple #6241C7 ΔE 0.076
- Blueberry #464196 ΔE 0.077
Use #2B4BC1 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.