#1B4749
Closest named color: Dark Teal (#014D4E). oklch(36.8% 0.048 199.4), rgb(27, 71, 73).
Aa
White text reads best on this color (10.27:1).
About this color
#1B4749 is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.048 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.021 away. White text reads best on it, at 10.27:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 2.04:1 |
| White text | 10.27:1 |
Values
| HEX | #1B4749 |
| RGB | rgb(27, 71, 73) |
| HSL | hsl(183, 46%, 20%) |
| OKLCH | oklch(36.8% 0.048 199.4) |
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 #1B4749 | 10.27:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #1B4749 | 2.04:1 | Fails | Lc 10.3 | Not readable |
| #1B4749 text on white | 10.27:1 | AAA | Lc 93.7 | Preferred for body text |
| #1B4749 text on black | 2.04:1 | Fails | Lc -8.8 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#CBDDDE
oklch(88.4% 0.019 200.8)
-
Step 300
300
#A6C8C9
oklch(80.8% 0.036 198.7)
-
Step 400
400
#75ACAE
oklch(70.7% 0.058 198.8)
-
Step 500
500
#4D979B
oklch(63.1% 0.074 200.1)
-
Step 600
600
#2B8185
oklch(55.5% 0.08 199.5)
-
Step 700
700
#1C6D71
oklch(49% 0.075 199.9)
-
Step 800
800
#1B595C
oklch(42.7% 0.062 199.7)
-
Step 900
900 (this color)
#1B4749
oklch(36.8% 0.048 199.4)
-
Step 950
950
#132B2C
oklch(27% 0.03 199.1)
#1B4749 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) | #424449 | 0.049 |
| Deuteranopia (no green cones) | #3B3E49 | 0.047 |
| Tritanopia (no blue cones) | #004A47 | 0.018 |
| Achromatopsia (no color) | #414141 | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B4749
#1B4749
oklch(36.8% 0.048 199.4)
- #563535
#563535
oklch(36.9% 0.048 19.6)
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 #1B4749, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.021
- Charcoal #264653 ΔE 0.023
- Dark Slate Gray #2F4F4F ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.037
- Dark Blue Green #005249 ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.041
- Dark Blue Grey #1F3B4D ΔE 0.043
- Deep Teal #00555A ΔE 0.046
Use #1B4749 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.