#006DDA
Closest named color: Cerulean Blue (#056EEE). oklch(54.8% 0.187 256), rgb(0, 109, 218).
Aa
White text reads best on this color (5.00:1).
About this color
#006DDA is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.187 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.031 away. White text reads best on it, at 5.00:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.187) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.19:1 |
| White text | 5.00:1 |
Values
| HEX | #006DDA |
| RGB | rgb(0, 109, 218) |
| HSL | hsl(210, 100%, 43%) |
| OKLCH | oklch(54.8% 0.187 256) |
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 #006DDA | 5.00:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #006DDA | 4.19:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #006DDA text on white | 5.00:1 | AA | Lc 73.7 | Content text, not long reading |
| #006DDA text on black | 4.19:1 | AA large text | Lc -28.0 | 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
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9DC3F7
oklch(80.8% 0.085 256.3)
-
Step 400
400
#66A2F3
oklch(70.6% 0.135 256.3)
-
Step 500
500
#3889EE
oklch(63.2% 0.171 255.8)
-
Step 600
600 (this color)
#006DDA
oklch(54.8% 0.187 256)
-
Step 700
700
#005DBC
oklch(49% 0.167 256)
-
Step 800
800
#024C9B
oklch(42.6% 0.144 256)
-
Step 900
900
#10407B
oklch(37.6% 0.112 256.2)
-
Step 950
950
#0C2648
oklch(26.9% 0.071 256.4)
#006DDA 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) | #2479DE | 0.036 |
| Deuteranopia (no green cones) | #0067D8 | 0.016 |
| Tritanopia (no blue cones) | #008899 | 0.140 |
| Achromatopsia (no color) | #6F6F6F | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #006DDA
#006DDA
oklch(54.8% 0.187 256)
- #976600
#976600
oklch(54.8% 0.115 75.9)
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 #006DDA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.031
- Royal Blue #4169E1 ΔE 0.036
- Azul #1D5DEC ΔE 0.048
- Neon Blue #4361EE ΔE 0.054
- Bright Blue #0165FC ΔE 0.056
- Mid Blue #276AB3 ΔE 0.060
- Windows Blue #3778BF ΔE 0.061
- Warm Blue #4B57DB ΔE 0.063
Use #006DDA 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.