#2B72DC
Closest named color: Royal Blue (#4169E1). oklch(56.7% 0.177 258.8), rgb(43, 114, 220).
Aa
White text reads best on this color (4.62:1).
About this color
#2B72DC is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.177 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.028 away. White text reads best on it, at 4.62:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.54:1 |
| White text | 4.62:1 |
Values
| HEX | #2B72DC |
| RGB | rgb(43, 114, 220) |
| HSL | hsl(216, 72%, 52%) |
| OKLCH | oklch(56.7% 0.177 258.8) |
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 #2B72DC | 4.62:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #2B72DC | 4.54:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #2B72DC text on white | 4.62:1 | AA | Lc 71.6 | Content text, not long reading |
| #2B72DC text on black | 4.54:1 | AA | Lc -30.1 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EBFA
oklch(93.7% 0.023 258.4)
-
Step 200
200
#C8DBF7
oklch(88.6% 0.044 258)
-
Step 300
300
#A2C2F4
oklch(80.8% 0.079 259.2)
-
Step 400
400
#6EA1EF
oklch(70.6% 0.127 258.6)
-
Step 500
500
#4787EA
oklch(63% 0.163 258.9)
-
Step 600
600 (this color)
#2B72DC
oklch(56.7% 0.177 258.8)
-
Step 700
700
#1A5CBC
oklch(49.2% 0.165 258.8)
-
Step 800
800
#184C98
oklch(42.8% 0.136 258.6)
-
Step 900
900
#1A4079
oklch(37.7% 0.106 258.6)
-
Step 950
950
#102647
oklch(27% 0.068 258.4)
#2B72DC 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) | #347DE0 | 0.031 |
| Deuteranopia (no green cones) | #006DDA | 0.023 |
| Tritanopia (no blue cones) | #008C9C | 0.137 |
| Achromatopsia (no color) | #757575 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B72DC
#2B72DC
oklch(56.7% 0.177 258.8)
- #9B6C00
#9B6C00
oklch(56.5% 0.118 78.6)
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 #2B72DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.028
- Cerulean Blue #056EEE ΔE 0.033
- Windows Blue #3778BF ΔE 0.051
- Clear Blue #247AFD ΔE 0.052
- Neon Blue #4361EE ΔE 0.052
- Azul #1D5DEC ΔE 0.060
- Bright Blue #0165FC ΔE 0.062
- Water Blue #0E87CC ΔE 0.065
Use #2B72DC 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.