#1B5761
Closest named color: Deep Teal (#00555A). oklch(42.3% 0.062 210.7), rgb(27, 87, 97).
Aa
White text reads best on this color (8.13:1).
About this color
#1B5761 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.062 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.019 away. White text reads best on it, at 8.13:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.58:1 |
| White text | 8.13:1 |
Values
| HEX | #1B5761 |
| RGB | rgb(27, 87, 97) |
| HSL | hsl(189, 56%, 24%) |
| OKLCH | oklch(42.3% 0.062 210.7) |
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 #1B5761 | 8.13:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #1B5761 | 2.58:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #1B5761 text on white | 8.13:1 | AAA | Lc 87.9 | Fine for body text |
| #1B5761 text on black | 2.58:1 | Fails | Lc -14.3 | 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
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE1
oklch(88.5% 0.02 212.6)
-
Step 300
300
#A7C7CE
oklch(80.8% 0.036 212.4)
-
Step 400
400
#75ABB5
oklch(70.7% 0.058 210.4)
-
Step 500
500
#4E96A3
oklch(63.2% 0.074 210.7)
-
Step 600
600
#2D808E
oklch(55.6% 0.081 210.8)
-
Step 700
700
#1E6C79
oklch(49.1% 0.075 211.1)
-
Step 800
800 (this color)
#1B5761
oklch(42.3% 0.062 210.7)
-
Step 900
900
#1E4950
oklch(37.8% 0.049 209.6)
-
Step 950
950
#132B2F
oklch(27.2% 0.031 209.5)
#1B5761 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) | #4F5462 | 0.059 |
| Deuteranopia (no green cones) | #454C61 | 0.054 |
| Tritanopia (no blue cones) | #005B5A | 0.023 |
| Achromatopsia (no color) | #4F4F4F | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B5761
#1B5761
oklch(42.3% 0.062 210.7)
- #6C4139
#6C4139
oklch(42.4% 0.062 31.2)
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 #1B5761, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.019
- Petrol #005F6A ΔE 0.026
- Dark Slate Gray #2F4F4F ΔE 0.034
- Dark Blue Green #005249 ΔE 0.045
- Dark Teal #014D4E ΔE 0.045
- Dark Green Blue #1F6357 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.053
- Charcoal #264653 ΔE 0.053
Use #1B5761 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.