#197C91
Closest named color: Ocean (#017B92). oklch(54.3% 0.09 216.3), rgb(25, 124, 145).
Aa
White text reads best on this color (4.84:1).
About this color
#197C91 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.090 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.008 away. White text reads best on it, at 4.84:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.33:1 |
| White text | 4.84:1 |
Values
| HEX | #197C91 |
| RGB | rgb(25, 124, 145) |
| HSL | hsl(191, 71%, 33%) |
| OKLCH | oklch(54.3% 0.09 216.3) |
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 #197C91 | 4.84:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #197C91 | 4.33:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #197C91 text on white | 4.84:1 | AA | Lc 73.2 | Content text, not long reading |
| #197C91 text on black | 4.33:1 | AA large text | Lc -28.5 | 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
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#C9DDE3
oklch(88.4% 0.023 217.7)
-
Step 300
300
#A4C8D2
oklch(81% 0.041 216.5)
-
Step 400
400
#70ABBB
oklch(70.7% 0.065 216.7)
-
Step 500
500
#4696AA
oklch(63.1% 0.083 216.6)
-
Step 600
600 (this color)
#197C91
oklch(54.3% 0.09 216.3)
-
Step 700
700
#0E6C7F
oklch(49.1% 0.084 216.2)
-
Step 800
800
#125867
oklch(42.6% 0.069 216.1)
-
Step 900
900
#194954
oklch(37.8% 0.054 215.6)
-
Step 950
950
#102B31
oklch(27.1% 0.034 214.3)
#197C91 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) | #6E7892 | 0.079 |
| Deuteranopia (no green cones) | #5E6D91 | 0.070 |
| Tritanopia (no blue cones) | #008383 | 0.036 |
| Achromatopsia (no color) | #717171 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #197C91
#197C91
oklch(54.3% 0.09 216.3)
- #9C5C4A
#9C5C4A
oklch(54.3% 0.089 36.5)
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 #197C91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.008
- Sea Blue #047495 ΔE 0.029
- Deep Aqua #08787F ΔE 0.030
- Teal #008080 ΔE 0.034
- Teal Blue #01889F ΔE 0.036
- Cerulean #457B9D ΔE 0.038
- Bluegreen #017A79 ΔE 0.040
- Ocean Blue #03719C ΔE 0.043
Use #197C91 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.