#339DB0
Closest named color: Cadet Blue (#5F9EA0). oklch(64.5% 0.097 212.1), rgb(51, 157, 176).
Aa
Black text reads best on this color (6.59:1).
About this color
#339DB0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.097 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.040 away. Black text reads best on it, at 6.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.59:1 |
| White text | 3.18:1 |
Values
| HEX | #339DB0 |
| RGB | rgb(51, 157, 176) |
| HSL | hsl(189, 55%, 45%) |
| OKLCH | oklch(64.5% 0.097 212.1) |
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 #339DB0 | 3.18:1 | AA large text | Lc -64.1 | Content text, not long reading |
| Black text on #339DB0 | 6.59:1 | AA | Lc 45.4 | Large or bold text, headings |
| #339DB0 text on white | 3.18:1 | AA large text | Lc 58.7 | Large or bold text, headings |
| #339DB0 text on black | 6.59:1 | AA | Lc -43.0 | 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
#E0ECEF
oklch(93.5% 0.013 214.4)
-
Step 200
200
#C6DEE3
oklch(88.4% 0.026 211.6)
-
Step 300
300
#9EC9D3
oklch(80.8% 0.047 213.5)
-
Step 400
400
#64AEBC
oklch(70.8% 0.076 211.1)
-
Step 500
500 (this color)
#339DB0
oklch(64.5% 0.097 212.1)
-
Step 600
600
#008294
oklch(55.7% 0.097 211.6)
-
Step 700
700
#006D7D
oklch(49.1% 0.086 212.3)
-
Step 800
800
#005967
oklch(42.6% 0.075 213)
-
Step 900
900
#054A55
oklch(37.6% 0.064 212.1)
-
Step 950
950
#092C32
oklch(27.2% 0.04 211.2)
#339DB0 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) | #8E98B1 | 0.090 |
| Deuteranopia (no green cones) | #7D8BB0 | 0.082 |
| Tritanopia (no blue cones) | #00A5A3 | 0.038 |
| Achromatopsia (no color) | #909090 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #339DB0
#339DB0
oklch(64.5% 0.097 212.1)
- #C17768
#C17768
oklch(64.5% 0.096 32.2)
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 #339DB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.040
- Sea #3C9992 ΔE 0.043
- Teal Green #0A9396 ΔE 0.049
- Persian Green #2A9D8F ΔE 0.052
- Blue Green #0F9B8E ΔE 0.055
- Turquoise Blue #06B1C4 ΔE 0.056
- Dull Teal #5F9E8F ΔE 0.057
- Grey Teal #5E9B8A ΔE 0.060
Use #339DB0 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.