#2966CC
Closest named color: Royal Blue (#4169E1). oklch(52.9% 0.171 260.2), rgb(41, 102, 204).
Aa
White text reads best on this color (5.43:1).
About this color
#2966CC is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.171 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.040 away. White text reads best on it, at 5.43:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #2966CC |
| RGB | rgb(41, 102, 204) |
| HSL | hsl(218, 67%, 48%) |
| OKLCH | oklch(52.9% 0.171 260.2) |
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 #2966CC | 5.43:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #2966CC | 3.86:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #2966CC text on white | 5.43:1 | AA | Lc 76.6 | Fine for body text |
| #2966CC text on black | 3.86:1 | AA large text | Lc -25.2 | 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
#E1EAF9
oklch(93.5% 0.023 260.7)
-
Step 200
200
#C9DAF6
oklch(88.4% 0.043 260.4)
-
Step 300
300
#A4C2F3
oklch(80.9% 0.077 260.1)
-
Step 400
400
#73A1ED
oklch(70.8% 0.123 260.1)
-
Step 500
500
#4E87E7
oklch(63.1% 0.157 260.2)
-
Step 600
600 (this color)
#2966CC
oklch(52.9% 0.171 260.2)
-
Step 700
700
#245CB9
oklch(49.2% 0.159 260.1)
-
Step 800
800
#1F4B95
oklch(42.6% 0.131 260.2)
-
Step 900
900
#1F4077
oklch(37.8% 0.102 260)
-
Step 950
950
#132646
oklch(27.1% 0.065 260.2)
#2966CC 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) | #2672D0 | 0.031 |
| Deuteranopia (no green cones) | #0063CA | 0.020 |
| Tritanopia (no blue cones) | #007F8F | 0.133 |
| Achromatopsia (no color) | #6A6A6A | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2966CC
#2966CC
oklch(52.9% 0.171 260.2)
- #8C6300
#8C6300
oklch(52.9% 0.109 80.2)
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 #2966CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.040
- Mid Blue #276AB3 ΔE 0.042
- Warm Blue #4B57DB ΔE 0.051
- Cerulean Blue #056EEE ΔE 0.054
- Azul #1D5DEC ΔE 0.055
- French Blue #436BAD ΔE 0.057
- Windows Blue #3778BF ΔE 0.058
- Neon Blue #4361EE ΔE 0.059
Use #2966CC 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.