#006CB1
Closest named color: Mid Blue (#276AB3). oklch(51.7% 0.136 247), rgb(0, 108, 177).
Aa
White text reads best on this color (5.55:1).
About this color
#006CB1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.136 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.016 away. White text reads best on it, at 5.55:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.77:1 |
| White text | 5.55:1 |
Values
| HEX | #006CB1 |
| RGB | rgb(0, 108, 177) |
| HSL | hsl(203, 100%, 35%) |
| OKLCH | oklch(51.7% 0.136 247) |
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 #006CB1 | 5.55:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #006CB1 | 3.77:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #006CB1 text on white | 5.55:1 | AA | Lc 77.1 | Fine for body text |
| #006CB1 text on black | 3.77:1 | AA large text | Lc -24.7 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF6
oklch(93.5% 0.019 248)
-
Step 200
200
#C7DCF1
oklch(88.5% 0.037 248.2)
-
Step 300
300
#9FC5E9
oklch(80.8% 0.065 247.2)
-
Step 400
400
#68A6DF
oklch(70.6% 0.106 247.6)
-
Step 500
500
#398FD6
oklch(63.1% 0.135 247.1)
-
Step 600
600
#0078C3
oklch(55.7% 0.146 246.8)
-
Step 700
700 (this color)
#006CB1
oklch(51.7% 0.136 247)
-
Step 800
800
#005288
oklch(42.7% 0.112 246.9)
-
Step 900
900
#10446D
oklch(37.6% 0.088 247.3)
-
Step 950
950
#0C2840
oklch(26.9% 0.056 247.6)
#006CB1 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) | #4A70B4 | 0.049 |
| Deuteranopia (no green cones) | #2F62B0 | 0.031 |
| Tritanopia (no blue cones) | #007D86 | 0.096 |
| Achromatopsia (no color) | #686868 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #006CB1
#006CB1
oklch(51.7% 0.136 247)
- #935900
#935900
oklch(51.8% 0.114 67.1)
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 #006CB1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.016
- French Blue #436BAD ΔE 0.038
- Ocean Blue #03719C ΔE 0.040
- Nice Blue #107AB0 ΔE 0.042
- Flat Blue #3C73A8 ΔE 0.043
- Peacock Blue #016795 ΔE 0.045
- Muted Blue #3B719F ΔE 0.046
- Windows Blue #3778BF ΔE 0.050
Use #006CB1 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.