#197F91
Closest named color: Ocean (#017B92). oklch(55% 0.09 213.1), rgb(25, 127, 145).
Aa
White text reads best on this color (4.68:1).
About this color
#197F91 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.090 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.015 away. White text reads best on it, at 4.68:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.48:1 |
| White text | 4.68:1 |
Values
| HEX | #197F91 |
| RGB | rgb(25, 127, 145) |
| HSL | hsl(189, 71%, 33%) |
| OKLCH | oklch(55% 0.09 213.1) |
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 #197F91 | 4.68:1 | AA | Lc -77.6 | Fine for body text |
| Black text on #197F91 | 4.48:1 | AA large text | Lc 32.0 | Non-text elements, placeholder text |
| #197F91 text on white | 4.68:1 | AA | Lc 72.1 | Content text, not long reading |
| #197F91 text on black | 4.48:1 | AA large text | Lc -29.6 | Dividers and decoration only |
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 600.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A3C8D0
oklch(80.9% 0.041 212.3)
-
Step 400
400
#70ACB9
oklch(70.8% 0.065 212.8)
-
Step 500
500
#4497A7
oklch(63.2% 0.083 212.1)
-
Step 600
600 (this color)
#197F91
oklch(55% 0.09 213.1)
-
Step 700
700
#086D7D
oklch(49.2% 0.084 212.6)
-
Step 800
800
#105966
oklch(42.8% 0.07 213)
-
Step 900
900
#184953
oklch(37.7% 0.054 213.6)
-
Step 950
950
#102B30
oklch(27% 0.034 211.3)
#197F91 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) | #727A92 | 0.083 |
| Deuteranopia (no green cones) | #626F91 | 0.074 |
| Tritanopia (no blue cones) | #008685 | 0.033 |
| Achromatopsia (no color) | #747474 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #197F91
#197F91
oklch(55% 0.09 213.1)
- #9F5D4F
#9F5D4F
oklch(55% 0.09 32.8)
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 #197F91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.015
- Teal Blue #01889F ΔE 0.029
- Teal #008080 ΔE 0.030
- Deep Aqua #08787F ΔE 0.033
- Sea Blue #047495 ΔE 0.038
- Cerulean #457B9D ΔE 0.039
- Bluegreen #017A79 ΔE 0.040
- Dark Cyan #008B8B ΔE 0.041
Use #197F91 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.