#3997AA
Closest named color: Teal Green (#0A9396). oklch(62.9% 0.091 213.5), rgb(57, 151, 170).
Aa
Black text reads best on this color (6.18:1).
About this color
#3997AA is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.091 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Green (#0A9396), ΔE 0.039 away. Black text reads best on it, at 6.18:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Teal Green (#0A9396) |
| Black text | 6.18:1 |
| White text | 3.39:1 |
Values
| HEX | #3997AA |
| RGB | rgb(57, 151, 170) |
| HSL | hsl(190, 50%, 45%) |
| OKLCH | oklch(62.9% 0.091 213.5) |
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 #3997AA | 3.39:1 | AA large text | Lc -66.6 | Content text, not long reading |
| Black text on #3997AA | 6.18:1 | AA | Lc 42.9 | Non-text elements, placeholder text |
| #3997AA text on white | 3.39:1 | AA large text | Lc 61.2 | Content text, not long reading |
| #3997AA text on black | 6.18:1 | AA | Lc -40.5 | 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
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C8DEE3
oklch(88.6% 0.024 212.9)
-
Step 300
300
#A1C9D2
oklch(81% 0.044 212.9)
-
Step 400
400
#6AADBB
oklch(70.8% 0.071 212.4)
-
Step 500
500 (this color)
#3997AA
oklch(62.9% 0.091 213.5)
-
Step 600
600
#008296
oklch(55.7% 0.098 213.4)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900
#104A55
oklch(37.9% 0.06 213.5)
-
Step 950
950
#0C2B31
oklch(26.9% 0.038 212.5)
#3997AA 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) | #8992AB | 0.083 |
| Deuteranopia (no green cones) | #7986AA | 0.076 |
| Tritanopia (no blue cones) | #009E9D | 0.038 |
| Achromatopsia (no color) | #8B8B8B | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3997AA
#3997AA
oklch(62.9% 0.091 213.5)
- #B97464
#B97464
oklch(62.9% 0.091 33.8)
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 #3997AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Green #0A9396 ΔE 0.039
- Sea #3C9992 ΔE 0.039
- Cadet Blue #5F9EA0 ΔE 0.044
- Blue NCS #118AB2 ΔE 0.049
- Persian Green #2A9D8F ΔE 0.052
- Blue Green #0F9B8E ΔE 0.053
- Teal Blue #01889F ΔE 0.053
- Dusty Teal #4C9085 ΔE 0.053
Use #3997AA 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.