#1B5969
Closest named color: Petrol (#005F6A). oklch(43.2% 0.067 218.6), rgb(27, 89, 105).
Aa
White text reads best on this color (7.83:1).
About this color
#1B5969 is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.067 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.020 away. White text reads best on it, at 7.83:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.67:1 |
| White text | 7.83:1 |
Values
| HEX | #1B5969 |
| RGB | rgb(27, 89, 105) |
| HSL | hsl(192, 59%, 26%) |
| OKLCH | oklch(43.2% 0.067 218.6) |
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 #1B5969 | 7.83:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #1B5969 | 2.67:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #1B5969 text on white | 7.83:1 | AAA | Lc 86.9 | Fine for body text |
| #1B5969 text on black | 2.67:1 | Fails | Lc -15.2 | 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 800.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CADDE3
oklch(88.5% 0.022 218.6)
-
Step 300
300
#A6C7D2
oklch(80.9% 0.039 220)
-
Step 400
400
#74AABB
oklch(70.6% 0.062 219.6)
-
Step 500
500
#4B95AA
oklch(63.1% 0.08 218.8)
-
Step 600
600
#297F95
oklch(55.6% 0.086 218.5)
-
Step 700
700
#1A6B7F
oklch(49% 0.08 218.7)
-
Step 800
800 (this color)
#1B5969
oklch(43.2% 0.067 218.6)
-
Step 900
900
#1C4854
oklch(37.6% 0.052 218.6)
-
Step 950
950
#122A31
oklch(26.9% 0.033 219.1)
#1B5969 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) | #4F566A | 0.057 |
| Deuteranopia (no green cones) | #444E69 | 0.052 |
| Tritanopia (no blue cones) | #005E5E | 0.030 |
| Achromatopsia (no color) | #525252 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5969
#1B5969
oklch(43.2% 0.067 218.6)
- #704335
#704335
oklch(43.2% 0.067 38)
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 #1B5969, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.020
- Deep Teal #00555A ΔE 0.031
- Dark Slate Gray #2F4F4F ΔE 0.046
- YInMn Blue #415A77 ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.050
- Dark Aqua #05696B ΔE 0.050
- Dark Green Blue #1F6357 ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.056
Use #1B5969 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.