#1B5047
Closest named color: Dark Blue Green (#005249). oklch(39.3% 0.058 180), rgb(27, 80, 71).
Aa
White text reads best on this color (9.19:1).
About this color
#1B5047 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.058 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.013 away. White text reads best on it, at 9.19:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.28:1 |
| White text | 9.19:1 |
Values
| HEX | #1B5047 |
| RGB | rgb(27, 80, 71) |
| HSL | hsl(170, 50%, 21%) |
| OKLCH | oklch(39.3% 0.058 180) |
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 #1B5047 | 9.19:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #1B5047 | 2.28:1 | Fails | Lc 13.0 | Not readable |
| #1B5047 text on white | 9.19:1 | AAA | Lc 91.0 | Preferred for body text |
| #1B5047 text on black | 2.28:1 | Fails | Lc -11.4 | Not readable |
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 900.
-
Step 50
50
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C9DFDA
oklch(88.6% 0.024 180.6)
-
Step 300
300
#A3CAC2
oklch(80.9% 0.043 181.3)
-
Step 400
400
#6EAFA2
oklch(70.6% 0.07 180.1)
-
Step 500
500
#429B8B
oklch(63.1% 0.089 179.6)
-
Step 600
600
#148575
oklch(55.5% 0.096 180)
-
Step 700
700
#007163
oklch(49.2% 0.089 180.3)
-
Step 800
800
#0A5C50
oklch(42.7% 0.075 179.5)
-
Step 900
900 (this color)
#1B5047
oklch(39.3% 0.058 180)
-
Step 950
950
#0F2C27
oklch(26.9% 0.036 180.5)
#1B5047 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) | #4C4B47 | 0.061 |
| Deuteranopia (no green cones) | #454548 | 0.059 |
| Tritanopia (no blue cones) | #00514D | 0.014 |
| Achromatopsia (no color) | #484848 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5047
#1B5047
oklch(39.3% 0.058 180)
- #5F3845
#5F3845
oklch(39.2% 0.058 358.7)
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 #1B5047, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.013
- Dark Teal #014D4E ΔE 0.022
- Dark Slate Gray #2F4F4F ΔE 0.026
- Deep Teal #00555A ΔE 0.031
- Charcoal #264653 ΔE 0.046
- Evergreen #05472A ΔE 0.054
- Charcoal Grey #3C4142 ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.057
Use #1B5047 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.