#216FE6
Closest named color: Cerulean Blue (#056EEE). oklch(56.5% 0.196 259.4), rgb(33, 111, 230).
Aa
White text reads best on this color (4.68:1).
About this color
#216FE6 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.196 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.015 away. White text reads best on it, at 4.68:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.196) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.48:1 |
| White text | 4.68:1 |
Values
| HEX | #216FE6 |
| RGB | rgb(33, 111, 230) |
| HSL | hsl(216, 80%, 52%) |
| OKLCH | oklch(56.5% 0.196 259.4) |
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 #216FE6 | 4.68:1 | AA | Lc -77.4 | Fine for body text |
| Black text on #216FE6 | 4.48:1 | AA large text | Lc 32.2 | Non-text elements, placeholder text |
| #216FE6 text on white | 4.68:1 | AA | Lc 71.9 | Content text, not long reading |
| #216FE6 text on black | 4.48:1 | AA large text | Lc -29.8 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DAFA
oklch(88.4% 0.049 259.8)
-
Step 300
300
#9FC2FA
oklch(80.9% 0.088 259.7)
-
Step 400
400
#6AA0F7
oklch(70.6% 0.14 259.6)
-
Step 500
500
#4086F4
oklch(63.2% 0.179 259.2)
-
Step 600
600 (this color)
#216FE6
oklch(56.5% 0.196 259.4)
-
Step 700
700
#0F59C5
oklch(49% 0.182 259.4)
-
Step 800
800
#114A9F
oklch(42.7% 0.15 259.2)
-
Step 900
900
#163F7E
oklch(37.7% 0.116 259.1)
-
Step 950
950
#0E254A
oklch(26.9% 0.075 259.5)
#216FE6 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) | #157DEA | 0.035 |
| Deuteranopia (no green cones) | #006CE4 | 0.015 |
| Tritanopia (no blue cones) | #008CA0 | 0.148 |
| Achromatopsia (no color) | #747474 | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #216FE6
#216FE6
oklch(56.5% 0.196 259.4)
- #9A6C00
#9A6C00
oklch(56.4% 0.117 79.2)
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 #216FE6, closest first.
No curated palette has a color within ΔE 0.04 of #216FE6.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.015
- Royal Blue #4169E1 ΔE 0.025
- Neon Blue #4361EE ΔE 0.040
- Clear Blue #247AFD ΔE 0.043
- Bright Blue #0165FC ΔE 0.043
- Azul #1D5DEC ΔE 0.045
- Warm Blue #4B57DB ΔE 0.062
- Windows Blue #3778BF ΔE 0.069
Use #216FE6 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.