#1B67AB
Closest named color: Mid Blue (#276AB3). oklch(50.5% 0.129 250.4), rgb(27, 103, 171).
Aa
White text reads best on this color (5.87:1).
About this color
#1B67AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.129 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.017 away. White text reads best on it, at 5.87:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.57:1 |
| White text | 5.87:1 |
Values
| HEX | #1B67AB |
| RGB | rgb(27, 103, 171) |
| HSL | hsl(208, 73%, 39%) |
| OKLCH | oklch(50.5% 0.129 250.4) |
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 #1B67AB | 5.87:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #1B67AB | 3.57:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #1B67AB text on white | 5.87:1 | AA | Lc 78.9 | Fine for body text |
| #1B67AB text on black | 3.57:1 | AA large text | Lc -22.9 | 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
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A3C4E8
oklch(80.8% 0.062 250.8)
-
Step 400
400
#6FA5DD
oklch(70.7% 0.1 250.3)
-
Step 500
500
#478DD4
oklch(63% 0.129 250.9)
-
Step 600
600
#2476C1
oklch(55.6% 0.139 250.5)
-
Step 700
700 (this color)
#1B67AB
oklch(50.5% 0.129 250.4)
-
Step 800
800
#165187
oklch(42.7% 0.107 250.5)
-
Step 900
900
#1A446C
oklch(37.8% 0.083 250)
-
Step 950
950
#10283F
oklch(27% 0.053 249.5)
#1B67AB 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) | #466BAE | 0.039 |
| Deuteranopia (no green cones) | #2F5FAA | 0.024 |
| Tritanopia (no blue cones) | #007780 | 0.095 |
| Achromatopsia (no color) | #646464 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B67AB
#1B67AB
oklch(50.5% 0.129 250.4)
- #8B5800
#8B5800
oklch(50.5% 0.109 70.8)
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 #1B67AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.017
- French Blue #436BAD ΔE 0.036
- Peacock Blue #016795 ΔE 0.038
- Ocean Blue #03719C ΔE 0.042
- Muted Blue #3B719F ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.049
- Dusky Blue #475F94 ΔE 0.050
Use #1B67AB 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.