#1B5145
Closest named color: Dark Blue Green (#005249). oklch(39.5% 0.06 175.7), rgb(27, 81, 69).
Aa
White text reads best on this color (9.09:1).
About this color
#1B5145 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.060 and its hue 176°. 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 9.09:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.30:1 |
| White text | 9.09:1 |
Values
| HEX | #1B5145 |
| RGB | rgb(27, 81, 69) |
| HSL | hsl(167, 50%, 21%) |
| OKLCH | oklch(39.5% 0.06 175.7) |
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 #1B5145 | 9.09:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #1B5145 | 2.30:1 | Fails | Lc 13.3 | Not readable |
| #1B5145 text on white | 9.09:1 | AAA | Lc 90.7 | Preferred for body text |
| #1B5145 text on black | 2.30:1 | Fails | Lc -11.6 | 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
#E1EDE9
oklch(93.6% 0.014 174.2)
-
Step 200
200
#C9DFD8
oklch(88.5% 0.025 174.7)
-
Step 300
300
#A3CBBF
oklch(81% 0.046 174.9)
-
Step 400
400
#6EB09F
oklch(70.8% 0.072 175.9)
-
Step 500
500
#419C87
oklch(63.2% 0.093 175.5)
-
Step 600
600
#118671
oklch(55.6% 0.1 176.1)
-
Step 700
700
#00715E
oklch(49% 0.092 175.6)
-
Step 800
800
#085D4D
oklch(42.8% 0.078 175.2)
-
Step 900
900 (this color)
#1B5145
oklch(39.5% 0.06 175.7)
-
Step 950
950
#0F2D26
oklch(27.2% 0.038 175.7)
#1B5145 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) | #4E4C44 | 0.063 |
| Deuteranopia (no green cones) | #464646 | 0.060 |
| Tritanopia (no blue cones) | #00524D | 0.016 |
| Achromatopsia (no color) | #484848 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5145
#1B5145
oklch(39.5% 0.06 175.7)
- #603848
#603848
oklch(39.5% 0.061 354.7)
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 #1B5145, 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 0.027
- Dark Slate Gray #2F4F4F ΔE 0.029
- Deep Teal #00555A ΔE 0.033
- Charcoal #264653 ΔE 0.051
- Evergreen #05472A ΔE 0.053
- Pine #2B5D34 ΔE 0.057
- Spruce #0A5F38 ΔE 0.057
Use #1B5145 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.