#319B9B
Closest named color: Sea (#3C9992). oklch(63.1% 0.094 195), rgb(49, 155, 155).
Aa
Black text reads best on this color (6.29:1).
About this color
#319B9B is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.094 and its hue 195°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.013 away. Black text reads best on it, at 6.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.29:1 |
| White text | 3.33:1 |
Values
| HEX | #319B9B |
| RGB | rgb(49, 155, 155) |
| HSL | hsl(180, 52%, 40%) |
| OKLCH | oklch(63.1% 0.094 195) |
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 #319B9B | 3.33:1 | AA large text | Lc -65.9 | Content text, not long reading |
| Black text on #319B9B | 6.29:1 | AA | Lc 43.6 | Non-text elements, placeholder text |
| #319B9B text on white | 3.33:1 | AA large text | Lc 60.5 | Content text, not long reading |
| #319B9B text on black | 6.29:1 | AA | Lc -41.2 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E0EDEC
oklch(93.6% 0.014 191.4)
-
Step 200
200
#C7DFDE
oklch(88.6% 0.026 193.6)
-
Step 300
300
#9FCACA
oklch(80.8% 0.045 196.3)
-
Step 400
400
#66AFAF
oklch(70.7% 0.073 195.6)
-
Step 500
500 (this color)
#319B9B
oklch(63.1% 0.094 195)
-
Step 600
600
#008484
oklch(55.5% 0.095 194.8)
-
Step 700
700
#006F6F
oklch(49% 0.084 194.8)
-
Step 800
800
#005B5B
oklch(42.7% 0.073 194.8)
-
Step 900
900
#084B4C
oklch(37.6% 0.061 196.5)
-
Step 950
950
#0A2C2C
oklch(26.9% 0.038 195.1)
#319B9B 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) | #91939B | 0.098 |
| Deuteranopia (no green cones) | #81889C | 0.091 |
| Tritanopia (no blue cones) | #00A09B | 0.019 |
| Achromatopsia (no color) | #8D8D8D | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #319B9B
#319B9B
oklch(63.1% 0.094 195)
- #BB7177
#BB7177
oklch(63% 0.094 14.9)
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 #319B9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.013
- Persian Green #2A9D8F ΔE 0.022
- Blue Green #0F9B8E ΔE 0.025
- Teal Green #0A9396 ΔE 0.030
- Dusty Teal #4C9085 ΔE 0.039
- Cadet Blue #5F9EA0 ΔE 0.039
- Grey Teal #5E9B8A ΔE 0.040
- Dull Teal #5F9E8F ΔE 0.041
Use #319B9B 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.