#1B6B91
Closest named color: Peacock Blue (#016795). oklch(49.9% 0.095 234.6), rgb(27, 107, 145).
Aa
White text reads best on this color (5.90:1).
About this color
#1B6B91 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.095 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.018 away. White text reads best on it, at 5.90:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.55:1 |
| White text | 5.90:1 |
Values
| HEX | #1B6B91 |
| RGB | rgb(27, 107, 145) |
| HSL | hsl(199, 69%, 34%) |
| OKLCH | oklch(49.9% 0.095 234.6) |
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 #1B6B91 | 5.90:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #1B6B91 | 3.55:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #1B6B91 text on white | 5.90:1 | AA | Lc 79.1 | Fine for body text |
| #1B6B91 text on black | 3.55:1 | AA large text | Lc -22.7 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF2
oklch(93.7% 0.013 233.7)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A5C6DA
oklch(80.9% 0.045 234.7)
-
Step 400
400
#72A9C8
oklch(70.8% 0.073 233.9)
-
Step 500
500
#4A92BA
oklch(63% 0.094 235.3)
-
Step 600
600
#277CA6
oklch(55.6% 0.102 234.8)
-
Step 700
700 (this color)
#1B6B91
oklch(49.9% 0.095 234.6)
-
Step 800
800
#185574
oklch(42.6% 0.079 235.6)
-
Step 900
900
#1B475D
oklch(37.8% 0.061 233.4)
-
Step 950
950
#112937
oklch(26.9% 0.04 236.4)
#1B6B91 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) | #586A93 | 0.058 |
| Deuteranopia (no green cones) | #495F90 | 0.049 |
| Tritanopia (no blue cones) | #007578 | 0.059 |
| Achromatopsia (no color) | #646464 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B6B91
#1B6B91
oklch(49.9% 0.095 234.6)
- #8C5329
#8C5329
oklch(50% 0.095 54.8)
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 #1B6B91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.018
- Ocean Blue #03719C ΔE 0.022
- Sea Blue #047495 ΔE 0.026
- Denim #3B638C ΔE 0.030
- Muted Blue #3B719F ΔE 0.038
- Ocean #017B92 ΔE 0.048
- Dusky Blue #475F94 ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.049
Use #1B6B91 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.