#016BE9
Closest named color: Cerulean Blue (#056EEE). oklch(55.5% 0.208 258.3), rgb(1, 107, 233).
Aa
White text reads best on this color (4.90:1).
About this color
#016BE9 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.208 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.011 away. White text reads best on it, at 4.90:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.208) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.28:1 |
| White text | 4.90:1 |
Values
| HEX | #016BE9 |
| RGB | rgb(1, 107, 233) |
| HSL | hsl(213, 99%, 46%) |
| OKLCH | oklch(55.5% 0.208 258.3) |
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 #016BE9 | 4.90:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #016BE9 | 4.28:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #016BE9 text on white | 4.90:1 | AA | Lc 73.1 | Content text, not long reading |
| #016BE9 text on black | 4.28:1 | AA large text | Lc -28.6 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFC
oklch(88.6% 0.051 258.4)
-
Step 300
300
#9BC3FD
oklch(81% 0.093 257.6)
-
Step 400
400
#63A1FC
oklch(70.8% 0.149 257.9)
-
Step 500
500
#3585FA
oklch(63% 0.191 258.4)
-
Step 600
600 (this color)
#016BE9
oklch(55.5% 0.208 258.3)
-
Step 700
700
#005AC6
oklch(49.1% 0.184 258.2)
-
Step 800
800
#0049A4
oklch(42.7% 0.16 258.3)
-
Step 900
900
#0E3E82
oklch(37.6% 0.125 258.5)
-
Step 950
950
#0B254C
oklch(27% 0.079 258.6)
#016BE9 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) | #007BED | 0.041 |
| Deuteranopia (no green cones) | #0068E7 | 0.008 |
| Tritanopia (no blue cones) | #008BA0 | 0.157 |
| Achromatopsia (no color) | #717171 | 0.208 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #016BE9
#016BE9
oklch(55.5% 0.208 258.3)
- #976900
#976900
oklch(55.4% 0.115 78.5)
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 #016BE9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.011
- Bright Blue #0165FC ΔE 0.032
- Azul #1D5DEC ΔE 0.032
- Royal Blue #4169E1 ΔE 0.034
- Neon Blue #4361EE ΔE 0.040
- Clear Blue #247AFD ΔE 0.051
- Warm Blue #4B57DB ΔE 0.061
- Electric Blue #0652FF ΔE 0.064
Use #016BE9 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.