#1B4E55
Closest named color: Dark Teal (#014D4E). oklch(39.3% 0.055 207.7), rgb(27, 78, 85).
Aa
White text reads best on this color (9.26:1).
About this color
#1B4E55 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.055 and its hue 208°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.020 away. White text reads best on it, at 9.26:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 2.26:1 |
| White text | 9.26:1 |
Values
| HEX | #1B4E55 |
| RGB | rgb(27, 78, 85) |
| HSL | hsl(187, 52%, 22%) |
| OKLCH | oklch(39.3% 0.055 207.7) |
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 #1B4E55 | 9.26:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #1B4E55 | 2.26:1 | Fails | Lc 12.8 | Not readable |
| #1B4E55 text on white | 9.26:1 | AAA | Lc 91.2 | Preferred for body text |
| #1B4E55 text on black | 2.26:1 | Fails | Lc -11.2 | 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
#F1F6F7
oklch(97% 0.005 211)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C9DEE1
oklch(88.6% 0.023 207.1)
-
Step 300
300
#A3C9CE
oklch(81% 0.041 206.2)
-
Step 400
400
#6EACB6
oklch(70.6% 0.065 208.7)
-
Step 500
500
#4298A4
oklch(63.2% 0.084 207.7)
-
Step 600
600
#15828F
oklch(55.7% 0.091 207.7)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#0B5963
oklch(42.6% 0.07 208.6)
-
Step 900
900 (this color)
#1B4E55
oklch(39.3% 0.055 207.7)
-
Step 950
950
#0F2B2F
oklch(26.9% 0.034 207.9)
#1B4E55 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) | #474B55 | 0.052 |
| Deuteranopia (no green cones) | #3E4455 | 0.049 |
| Tritanopia (no blue cones) | #005250 | 0.022 |
| Achromatopsia (no color) | #474747 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B4E55
#1B4E55
oklch(39.3% 0.055 207.7)
- #603A35
#603A35
oklch(39.3% 0.055 27.9)
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 #1B4E55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.020
- Dark Slate Gray #2F4F4F ΔE 0.022
- Deep Teal #00555A ΔE 0.023
- Charcoal #264653 ΔE 0.026
- Dark Blue Green #005249 ΔE 0.032
- Dark Grey Blue #29465B ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.053
- Petrol #005F6A ΔE 0.056
Use #1B4E55 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.