#0067CB
Closest named color: Mid Blue (#276AB3). oklch(52.3% 0.175 255.4), rgb(0, 103, 203).
Aa
White text reads best on this color (5.52:1).
About this color
#0067CB is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.175 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.042 away. White text reads best on it, at 5.52:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.175) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.80:1 |
| White text | 5.52:1 |
Values
| HEX | #0067CB |
| RGB | rgb(0, 103, 203) |
| HSL | hsl(210, 100%, 40%) |
| OKLCH | oklch(52.3% 0.175 255.4) |
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 #0067CB | 5.52:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #0067CB | 3.80:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #0067CB text on white | 5.52:1 | AA | Lc 76.8 | Fine for body text |
| #0067CB text on black | 3.80:1 | AA large text | Lc -25.0 | 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 700.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9CC4F7
oklch(81% 0.084 254.7)
-
Step 400
400
#64A3F3
oklch(70.8% 0.135 255.1)
-
Step 500
500
#3589EF
oklch(63.1% 0.173 255.5)
-
Step 600
600
#0070DC
oklch(55.6% 0.186 255.4)
-
Step 700
700 (this color)
#0067CB
oklch(52.3% 0.175 255.4)
-
Step 800
800
#004D9A
oklch(42.7% 0.142 255.2)
-
Step 900
900
#0E417B
oklch(37.8% 0.111 255.1)
-
Step 950
950
#0B2648
oklch(26.9% 0.071 255.8)
#0067CB 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) | #2771CF | 0.034 |
| Deuteranopia (no green cones) | #0061C9 | 0.016 |
| Tritanopia (no blue cones) | #00808F | 0.131 |
| Achromatopsia (no color) | #696969 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0067CB
#0067CB
oklch(52.3% 0.175 255.4)
- #8E5F00
#8E5F00
oklch(52.3% 0.11 75.3)
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 #0067CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.042
- Royal Blue #4169E1 ΔE 0.052
- Cerulean Blue #056EEE ΔE 0.056
- Azul #1D5DEC ΔE 0.058
- French Blue #436BAD ΔE 0.062
- Windows Blue #3778BF ΔE 0.062
- Warm Blue #4B57DB ΔE 0.064
- Neon Blue #4361EE ΔE 0.069
Use #0067CB 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.