#1B565D
Closest named color: Deep Teal (#00555A). oklch(41.9% 0.06 206.3), rgb(27, 86, 93).
Aa
White text reads best on this color (8.28:1).
About this color
#1B565D is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.060 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.014 away. White text reads best on it, at 8.28:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.53:1 |
| White text | 8.28:1 |
Values
| HEX | #1B565D |
| RGB | rgb(27, 86, 93) |
| HSL | hsl(186, 55%, 24%) |
| OKLCH | oklch(41.9% 0.06 206.3) |
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 #1B565D | 8.28:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #1B565D | 2.53:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #1B565D text on white | 8.28:1 | AAA | Lc 88.4 | Fine for body text |
| #1B565D text on black | 2.53:1 | Fails | Lc -13.8 | 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 800.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A7C8CC
oklch(81% 0.036 205.5)
-
Step 400
400
#76ABB2
oklch(70.7% 0.057 206.3)
-
Step 500
500
#50969F
oklch(63.1% 0.072 206.4)
-
Step 600
600
#2F808A
oklch(55.5% 0.078 206.6)
-
Step 700
700
#206C75
oklch(49% 0.073 206.5)
-
Step 800
800 (this color)
#1B565D
oklch(41.9% 0.06 206.3)
-
Step 900
900
#1F494E
oklch(37.8% 0.047 205.8)
-
Step 950
950
#132B2E
oklch(27.1% 0.03 206.1)
#1B565D 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) | #4F525D | 0.060 |
| Deuteranopia (no green cones) | #454B5D | 0.055 |
| Tritanopia (no blue cones) | #005A58 | 0.021 |
| Achromatopsia (no color) | #4E4E4E | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B565D
#1B565D
oklch(41.9% 0.06 206.3)
- #6A403B
#6A403B
oklch(42% 0.06 27.2)
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 #1B565D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.014
- Dark Slate Gray #2F4F4F ΔE 0.029
- Petrol #005F6A ΔE 0.030
- Dark Blue Green #005249 ΔE 0.038
- Dark Teal #014D4E ΔE 0.039
- Dark Green Blue #1F6357 ΔE 0.048
- Charcoal #264653 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.051
Use #1B565D 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.