#2E66DA
Closest named color: Royal Blue (#4169E1). oklch(54.1% 0.188 262.5), rgb(46, 102, 218).
Aa
White text reads best on this color (5.21:1).
About this color
#2E66DA is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.188 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.023 away. White text reads best on it, at 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.188) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.02:1 |
| White text | 5.21:1 |
Values
| HEX | #2E66DA |
| RGB | rgb(46, 102, 218) |
| HSL | hsl(220, 70%, 52%) |
| OKLCH | oklch(54.1% 0.188 262.5) |
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 #2E66DA | 5.21:1 | AA | Lc -80.7 | Fine for body text |
| Black text on #2E66DA | 4.02:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #2E66DA text on white | 5.21:1 | AA | Lc 75.3 | Fine for body text |
| #2E66DA text on black | 4.02:1 | AA large text | Lc -26.4 | 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 600.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A3C1F8
oklch(80.8% 0.085 262.3)
-
Step 400
400
#729FF5
oklch(70.7% 0.136 262.5)
-
Step 500
500
#4E84F0
oklch(63% 0.172 262.5)
-
Step 600
600 (this color)
#2E66DA
oklch(54.1% 0.188 262.5)
-
Step 700
700
#2558C2
oklch(49.1% 0.175 262.5)
-
Step 800
800
#20499D
oklch(42.8% 0.145 262.5)
-
Step 900
900
#1F3E7C
oklch(37.7% 0.112 262.4)
-
Step 950
950
#132549
oklch(27.1% 0.071 262.6)
#2E66DA 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) | #0175DE | 0.038 |
| Deuteranopia (no green cones) | #0065D8 | 0.021 |
| Tritanopia (no blue cones) | #008296 | 0.145 |
| Achromatopsia (no color) | #6D6D6D | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2E66DA
#2E66DA
oklch(54.1% 0.188 262.5)
- #8F6800
#8F6800
oklch(54.3% 0.112 82.7)
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 #2E66DA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.023
- Cerulean Blue #056EEE ΔE 0.036
- Neon Blue #4361EE ΔE 0.038
- Azul #1D5DEC ΔE 0.038
- Warm Blue #4B57DB ΔE 0.041
- Bright Blue #0165FC ΔE 0.054
- Mid Blue #276AB3 ΔE 0.064
- Dark Periwinkle #665FD1 ΔE 0.064
Use #2E66DA 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.