#1B4841
Closest named color: Dark Teal (#014D4E). oklch(36.8% 0.051 181.7), rgb(27, 72, 65).
Aa
White text reads best on this color (10.24:1).
About this color
#1B4841 is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.051 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.024 away. White text reads best on it, at 10.24:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 2.04:1 |
| White text | 10.24:1 |
Values
| HEX | #1B4841 |
| RGB | rgb(27, 72, 65) |
| HSL | hsl(171, 45%, 19%) |
| OKLCH | oklch(36.8% 0.051 181.7) |
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 #1B4841 | 10.24:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #1B4841 | 2.04:1 | Fails | Lc 10.3 | Not readable |
| #1B4841 text on white | 10.24:1 | AAA | Lc 93.6 | Preferred for body text |
| #1B4841 text on black | 2.04:1 | Fails | Lc -8.9 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEA
oklch(93.5% 0.011 182.9)
-
Step 200
200
#CBDEDA
oklch(88.5% 0.021 181.8)
-
Step 300
300
#A7C9C2
oklch(80.9% 0.038 181.5)
-
Step 400
400
#75ADA3
oklch(70.6% 0.061 182.1)
-
Step 500
500
#4D998D
oklch(63.1% 0.078 182.2)
-
Step 600
600
#2B8377
oklch(55.5% 0.084 182.4)
-
Step 700
700
#1C6F64
oklch(49.1% 0.079 182.1)
-
Step 800
800
#1B5B51
oklch(42.8% 0.066 180.6)
-
Step 900
900 (this color)
#1B4841
oklch(36.8% 0.051 181.7)
-
Step 950
950
#132C27
oklch(27.1% 0.033 179.2)
#1B4841 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) | #454441 | 0.054 |
| Deuteranopia (no green cones) | #3E3F42 | 0.051 |
| Tritanopia (no blue cones) | #004946 | 0.015 |
| Achromatopsia (no color) | #414141 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B4841
#1B4841
oklch(36.8% 0.051 181.7)
- #56343D
#56343D
oklch(36.9% 0.051 2.7)
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 #1B4841, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.024
- Dark Blue Green #005249 ΔE 0.032
- Charcoal #264653 ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.039
- Evergreen #05472A ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.045
- Deep Teal #00555A ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.052
Use #1B4841 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.