#006EE4
Closest named color: Cerulean Blue (#056EEE). oklch(55.7% 0.198 257), rgb(0, 110, 228).
Aa
White text reads best on this color (4.82:1).
About this color
#006EE4 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.198 and its hue 257°. 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 4.82:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.198) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.35:1 |
| White text | 4.82:1 |
Values
| HEX | #006EE4 |
| RGB | rgb(0, 110, 228) |
| HSL | hsl(211, 100%, 45%) |
| OKLCH | oklch(55.7% 0.198 257) |
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 #006EE4 | 4.82:1 | AA | Lc -78.0 | Fine for body text |
| Black text on #006EE4 | 4.35:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #006EE4 text on white | 4.82:1 | AA | Lc 72.6 | Content text, not long reading |
| #006EE4 text on black | 4.35:1 | AA large text | Lc -29.1 | 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
#C5DBFA
oklch(88.5% 0.049 256.9)
-
Step 300
300
#9CC3FA
oklch(80.9% 0.089 257)
-
Step 400
400
#64A2F8
oklch(70.8% 0.142 256.9)
-
Step 500
500
#3587F5
oklch(63.1% 0.183 257.1)
-
Step 600
600 (this color)
#006EE4
oklch(55.7% 0.198 257)
-
Step 700
700
#005CC1
oklch(49.2% 0.175 257.1)
-
Step 800
800
#004B9F
oklch(42.7% 0.151 256.9)
-
Step 900
900
#0E407F
oklch(37.8% 0.118 256.8)
-
Step 950
950
#0B264A
oklch(27.1% 0.074 256.8)
#006EE4 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) | #107BE8 | 0.035 |
| Deuteranopia (no green cones) | #0069E2 | 0.013 |
| Tritanopia (no blue cones) | #008B9E | 0.149 |
| Achromatopsia (no color) | #727272 | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #006EE4
#006EE4
oklch(55.7% 0.198 257)
- #996900
#996900
oklch(55.7% 0.116 77.3)
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 #006EE4, closest first.
No curated palette has a color within ΔE 0.04 of #006EE4.
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 0.033
- Azul #1D5DEC ΔE 0.042
- Bright Blue #0165FC ΔE 0.043
- Neon Blue #4361EE ΔE 0.046
- Clear Blue #247AFD ΔE 0.051
- Warm Blue #4B57DB ΔE 0.064
- Windows Blue #3778BF ΔE 0.071
Use #006EE4 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.