#1B6380
Closest named color: Peacock Blue (#016795). oklch(47% 0.083 229.8), rgb(27, 99, 128).
Aa
White text reads best on this color (6.68:1).
About this color
#1B6380 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 47%, its chroma 0.083 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.033 away. White text reads best on it, at 6.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.14:1 |
| White text | 6.68:1 |
Values
| HEX | #1B6380 |
| RGB | rgb(27, 99, 128) |
| HSL | hsl(197, 65%, 30%) |
| OKLCH | oklch(47% 0.083 229.8) |
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 #1B6380 | 6.68:1 | AA | Lc -87.7 | Fine for body text |
| Black text on #1B6380 | 3.14:1 | AA large text | Lc 21.4 | Dividers and decoration only |
| #1B6380 text on white | 6.68:1 | AA | Lc 82.7 | Fine for body text |
| #1B6380 text on black | 3.14:1 | AA large text | Lc -19.3 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2EBF0
oklch(93.5% 0.012 231.7)
-
Step 200
200
#CBDCE5
oklch(88.4% 0.022 230.6)
-
Step 300
300
#A7C6D6
oklch(80.9% 0.04 230.3)
-
Step 400
400
#77A9C1
oklch(70.8% 0.064 229.4)
-
Step 500
500
#5193B1
oklch(63.1% 0.081 229.4)
-
Step 600
600
#317D9D
oklch(55.7% 0.089 229.3)
-
Step 700
700 (this color)
#1B6380
oklch(47% 0.083 229.8)
-
Step 800
800
#1F566D
oklch(42.8% 0.068 229.2)
-
Step 900
900
#204758
oklch(37.7% 0.053 228.9)
-
Step 950
950
#142A34
oklch(27.2% 0.034 229.2)
#1B6380 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) | #546181 | 0.057 |
| Deuteranopia (no green cones) | #475880 | 0.049 |
| Tritanopia (no blue cones) | #006B6D | 0.047 |
| Achromatopsia (no color) | #5C5C5C | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B6380
#1B6380
oklch(47% 0.083 229.8)
- #804C2E
#804C2E
oklch(47.1% 0.083 49.7)
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 #1B6380, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.033
- Denim #3B638C ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.035
- YInMn Blue #415A77 ΔE 0.039
- Petrol #005F6A ΔE 0.040
- Dark Aqua #05696B ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.051
Use #1B6380 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.