#379CB3
Closest named color: Cadet Blue (#5F9EA0). oklch(64.4% 0.097 216), rgb(55, 156, 179).
Aa
Black text reads best on this color (6.56:1).
About this color
#379CB3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.097 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.042 away. Black text reads best on it, at 6.56:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.56:1 |
| White text | 3.19:1 |
Values
| HEX | #379CB3 |
| RGB | rgb(55, 156, 179) |
| HSL | hsl(191, 53%, 46%) |
| OKLCH | oklch(64.4% 0.097 216) |
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 #379CB3 | 3.19:1 | AA large text | Lc -64.3 | Content text, not long reading |
| Black text on #379CB3 | 6.56:1 | AA | Lc 45.2 | Large or bold text, headings |
| #379CB3 text on white | 3.19:1 | AA large text | Lc 58.9 | Large or bold text, headings |
| #379CB3 text on black | 6.56:1 | AA | Lc -42.9 | 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
#E0ECF0
oklch(93.5% 0.014 219.6)
-
Step 200
200
#C7DEE4
oklch(88.5% 0.026 215.2)
-
Step 300
300
#9FC9D4
oklch(80.9% 0.047 215.5)
-
Step 400
400
#66ADBF
oklch(70.8% 0.076 215.9)
-
Step 500
500 (this color)
#379CB3
oklch(64.4% 0.097 216)
-
Step 600
600
#008198
oklch(55.6% 0.099 216.1)
-
Step 700
700
#006C80
oklch(49% 0.087 216.4)
-
Step 800
800
#005969
oklch(42.7% 0.076 215.4)
-
Step 900
900
#094A57
oklch(37.8% 0.063 215.5)
-
Step 950
950
#0A2B33
oklch(26.9% 0.04 217)
#379CB3 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) | #8C97B4 | 0.085 |
| Deuteranopia (no green cones) | #7B8AB3 | 0.078 |
| Tritanopia (no blue cones) | #00A4A3 | 0.042 |
| Achromatopsia (no color) | #909090 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #379CB3
#379CB3
oklch(64.4% 0.097 216)
- #C17864
#C17864
oklch(64.6% 0.097 36.1)
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 #379CB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.042
- Sea #3C9992 ΔE 0.049
- Teal Green #0A9396 ΔE 0.053
- Turquoise Blue #06B1C4 ΔE 0.058
- Persian Green #2A9D8F ΔE 0.058
- Blue NCS #118AB2 ΔE 0.059
- Faded Blue #658CBB ΔE 0.061
- Blue Green #0F9B8E ΔE 0.061
Use #379CB3 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.