#1B6BC5
Closest named color: Mid Blue (#276AB3). oklch(53.1% 0.159 255.1), rgb(27, 107, 197).
Aa
White text reads best on this color (5.30:1).
About this color
#1B6BC5 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.159 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.028 away. White text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.95:1 |
| White text | 5.30:1 |
Values
| HEX | #1B6BC5 |
| RGB | rgb(27, 107, 197) |
| HSL | hsl(212, 76%, 44%) |
| OKLCH | oklch(53.1% 0.159 255.1) |
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 #1B6BC5 | 5.30:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #1B6BC5 | 3.95:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #1B6BC5 text on white | 5.30:1 | AA | Lc 75.9 | Fine for body text |
| #1B6BC5 text on black | 3.95:1 | AA large text | Lc -25.9 | 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 600.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C8DBF4
oklch(88.5% 0.04 255.3)
-
Step 300
300
#A2C3EF
oklch(80.8% 0.072 255.7)
-
Step 400
400
#6FA3E7
oklch(70.7% 0.115 255.5)
-
Step 500
500
#468BDF
oklch(63.2% 0.145 254.7)
-
Step 600
600 (this color)
#1B6BC5
oklch(53.1% 0.159 255.1)
-
Step 700
700
#1660B2
oklch(49.2% 0.148 255)
-
Step 800
800
#164E90
oklch(42.6% 0.123 255.4)
-
Step 900
900
#1A4273
oklch(37.8% 0.095 255.2)
-
Step 950
950
#102743
oklch(27% 0.06 254.6)
#1B6BC5 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) | #3A73C8 | 0.033 |
| Deuteranopia (no green cones) | #0B64C3 | 0.021 |
| Tritanopia (no blue cones) | #00818E | 0.120 |
| Achromatopsia (no color) | #6B6B6B | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B6BC5
#1B6BC5
oklch(53.1% 0.159 255.1)
- #916100
#916100
oklch(53.1% 0.112 75.2)
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 #1B6BC5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.028
- Windows Blue #3778BF ΔE 0.045
- French Blue #436BAD ΔE 0.046
- Royal Blue #4169E1 ΔE 0.053
- Nice Blue #107AB0 ΔE 0.058
- Flat Blue #3C73A8 ΔE 0.059
- Cerulean Blue #056EEE ΔE 0.063
- Muted Blue #3B719F ΔE 0.069
Use #1B6BC5 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.