#0670D4
Closest named color: Cerulean Blue (#056EEE). oklch(55% 0.175 254.4), rgb(6, 112, 212).
Aa
White text reads best on this color (4.91:1).
About this color
#0670D4 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.175 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.041 away. White text reads best on it, at 4.91:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.27:1 |
| White text | 4.91:1 |
Values
| HEX | #0670D4 |
| RGB | rgb(6, 112, 212) |
| HSL | hsl(209, 94%, 43%) |
| OKLCH | oklch(55% 0.175 254.4) |
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 #0670D4 | 4.91:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #0670D4 | 4.27:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #0670D4 text on white | 4.91:1 | AA | Lc 73.3 | Content text, not long reading |
| #0670D4 text on black | 4.27:1 | 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
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DBF6
oklch(88.4% 0.044 254.8)
-
Step 300
300
#9EC4F3
oklch(80.9% 0.078 254)
-
Step 400
400
#67A3ED
oklch(70.6% 0.126 254.4)
-
Step 500
500
#3A8AE8
oklch(63.1% 0.162 254.6)
-
Step 600
600 (this color)
#0670D4
oklch(55% 0.175 254.4)
-
Step 700
700
#005FB7
oklch(49.1% 0.158 254.4)
-
Step 800
800
#044E96
oklch(42.7% 0.135 254.3)
-
Step 900
900
#114177
oklch(37.5% 0.105 254.5)
-
Step 950
950
#0C2746
oklch(27.1% 0.066 254)
#0670D4 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) | #357AD8 | 0.038 |
| Deuteranopia (no green cones) | #0069D2 | 0.019 |
| Tritanopia (no blue cones) | #008898 | 0.129 |
| Achromatopsia (no color) | #717171 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0670D4
#0670D4
oklch(55% 0.175 254.4)
- #996600
#996600
oklch(55.1% 0.116 74.8)
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 #0670D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.041
- Royal Blue #4169E1 ΔE 0.041
- Windows Blue #3778BF ΔE 0.049
- Mid Blue #276AB3 ΔE 0.052
- Azul #1D5DEC ΔE 0.060
- Neon Blue #4361EE ΔE 0.063
- French Blue #436BAD ΔE 0.066
- Water Blue #0E87CC ΔE 0.067
Use #0670D4 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.