#1B6ECD
Closest named color: Mid Blue (#276AB3). oklch(54.4% 0.166 255.5), rgb(27, 110, 205).
Aa
White text reads best on this color (5.04:1).
About this color
#1B6ECD is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.166 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.040 away. White text reads best on it, at 5.04:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 4.15:1 |
| White text | 5.04:1 |
Values
| HEX | #1B6ECD |
| RGB | rgb(27, 110, 205) |
| HSL | hsl(212, 77%, 45%) |
| OKLCH | oklch(54.4% 0.166 255.5) |
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 #1B6ECD | 5.04:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #1B6ECD | 4.15:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #1B6ECD text on white | 5.04:1 | AA | Lc 74.3 | Content text, not long reading |
| #1B6ECD text on black | 4.15:1 | AA large text | Lc -27.4 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF5
oklch(88.5% 0.041 256.2)
-
Step 300
300
#A1C3F1
oklch(80.8% 0.075 256.1)
-
Step 400
400
#6DA3EA
oklch(70.7% 0.119 255.7)
-
Step 500
500
#438AE3
oklch(63.1% 0.152 255.4)
-
Step 600
600 (this color)
#1B6ECD
oklch(54.4% 0.166 255.5)
-
Step 700
700
#115FB5
oklch(49.1% 0.154 255.4)
-
Step 800
800
#134E93
oklch(42.8% 0.128 255.6)
-
Step 900
900
#184175
oklch(37.6% 0.1 256)
-
Step 950
950
#0F2744
oklch(27% 0.062 254.6)
#1B6ECD 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) | #3977D1 | 0.034 |
| Deuteranopia (no green cones) | #0067CB | 0.022 |
| Tritanopia (no blue cones) | #008593 | 0.125 |
| Achromatopsia (no color) | #6F6F6F | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B6ECD
#1B6ECD
oklch(54.4% 0.166 255.5)
- #966400
#966400
oklch(54.3% 0.115 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 #1B6ECD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.040
- Windows Blue #3778BF ΔE 0.043
- Royal Blue #4169E1 ΔE 0.044
- Cerulean Blue #056EEE ΔE 0.051
- French Blue #436BAD ΔE 0.055
- Nice Blue #107AB0 ΔE 0.061
- Azul #1D5DEC ΔE 0.065
- Flat Blue #3C73A8 ΔE 0.065
Use #1B6ECD 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.