#1997B1
Closest named color: Blue NCS (#118AB2). oklch(62.5% 0.107 216.5), rgb(25, 151, 177).
Aa
Black text reads best on this color (6.10:1).
About this color
#1997B1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.107 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.040 away. Black text reads best on it, at 6.10:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 6.10:1 |
| White text | 3.44:1 |
Values
| HEX | #1997B1 |
| RGB | rgb(25, 151, 177) |
| HSL | hsl(190, 75%, 40%) |
| OKLCH | oklch(62.5% 0.107 216.5) |
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 #1997B1 | 3.44:1 | AA large text | Lc -66.9 | Content text, not long reading |
| Black text on #1997B1 | 6.10:1 | AA | Lc 42.6 | Non-text elements, placeholder text |
| #1997B1 text on white | 3.44:1 | AA large text | Lc 61.5 | Content text, not long reading |
| #1997B1 text on black | 6.10:1 | AA | Lc -40.2 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#DFEDF0
oklch(93.7% 0.015 212)
-
Step 200
200
#C5DEE6
oklch(88.5% 0.029 219)
-
Step 300
300
#9BCAD6
oklch(81% 0.052 215.1)
-
Step 400
400
#5EAEC2
oklch(70.7% 0.084 216)
-
Step 500
500 (this color)
#1997B1
oklch(62.5% 0.107 216.5)
-
Step 600
600
#008199
oklch(55.6% 0.099 216.9)
-
Step 700
700
#006C81
oklch(49% 0.088 217.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#052C34
oklch(27.1% 0.044 214.8)
#1997B1 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) | #8692B2 | 0.093 |
| Deuteranopia (no green cones) | #7284B1 | 0.083 |
| Tritanopia (no blue cones) | #00A09F | 0.044 |
| Achromatopsia (no color) | #8A8A8A | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1997B1
#1997B1
oklch(62.5% 0.107 216.5)
- #BF6F59
#BF6F59
oklch(62.5% 0.107 36.2)
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 #1997B1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.040
- Teal Green #0A9396 ΔE 0.042
- Teal Blue #01889F ΔE 0.048
- Sea #3C9992 ΔE 0.051
- Cadet Blue #5F9EA0 ΔE 0.059
- Dusty Blue #5A86AD ΔE 0.059
- Blue Green #0F9B8E ΔE 0.060
- Persian Green #2A9D8F ΔE 0.060
Use #1997B1 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.