#006DDF
Closest named color: Cerulean Blue (#056EEE). oklch(55.1% 0.193 256.6), rgb(0, 109, 223).
Aa
White text reads best on this color (4.93:1).
About this color
#006DDF is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.193 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.023 away. White text reads best on it, at 4.93:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.193) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.25:1 |
| White text | 4.93:1 |
Values
| HEX | #006DDF |
| RGB | rgb(0, 109, 223) |
| HSL | hsl(211, 100%, 44%) |
| OKLCH | oklch(55.1% 0.193 256.6) |
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 #006DDF | 4.93:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #006DDF | 4.25:1 | AA large text | Lc 30.7 | Non-text elements, placeholder text |
| #006DDF text on white | 4.93:1 | AA | Lc 73.3 | Content text, not long reading |
| #006DDF text on black | 4.25:1 | AA large text | Lc -28.4 | 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
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBF9
oklch(88.5% 0.048 256.2)
-
Step 300
300
#9DC3F9
oklch(80.9% 0.087 257.2)
-
Step 400
400
#65A2F6
oklch(70.7% 0.139 256.7)
-
Step 500
500
#3788F2
oklch(63.2% 0.177 256.6)
-
Step 600
600 (this color)
#006DDF
oklch(55.1% 0.193 256.6)
-
Step 700
700
#005CBF
oklch(49% 0.172 256.8)
-
Step 800
800
#014B9E
oklch(42.6% 0.15 256.8)
-
Step 900
900
#0F407D
oklch(37.7% 0.115 256.5)
-
Step 950
950
#0B2649
oklch(27% 0.073 256.3)
#006DDF 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) | #197AE3 | 0.036 |
| Deuteranopia (no green cones) | #0068DD | 0.013 |
| Tritanopia (no blue cones) | #00899B | 0.145 |
| Achromatopsia (no color) | #707070 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #006DDF
#006DDF
oklch(55.1% 0.193 256.6)
- #976700
#976700
oklch(55% 0.115 76.8)
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 #006DDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.023
- Royal Blue #4169E1 ΔE 0.034
- Azul #1D5DEC ΔE 0.043
- Bright Blue #0165FC ΔE 0.048
- Neon Blue #4361EE ΔE 0.049
- Clear Blue #247AFD ΔE 0.058
- Warm Blue #4B57DB ΔE 0.063
- Windows Blue #3778BF ΔE 0.066
Use #006DDF 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.