#339BC4
Closest named color: Faded Blue (#658CBB). oklch(64.8% 0.11 228.8), rgb(51, 155, 196).
Aa
Black text reads best on this color (6.62:1).
About this color
#339BC4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.110 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.053 away. Black text reads best on it, at 6.62:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.62:1 |
| White text | 3.16:1 |
Values
| HEX | #339BC4 |
| RGB | rgb(51, 155, 196) |
| HSL | hsl(197, 59%, 48%) |
| OKLCH | oklch(64.8% 0.11 228.8) |
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 #339BC4 | 3.16:1 | AA large text | Lc -63.9 | Content text, not long reading |
| Black text on #339BC4 | 6.62:1 | AA | Lc 45.6 | Large or bold text, headings |
| #339BC4 text on white | 3.16:1 | AA large text | Lc 58.5 | Large or bold text, headings |
| #339BC4 text on black | 6.62:1 | AA | Lc -43.3 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C6DDE9
oklch(88.4% 0.03 230.3)
-
Step 300
300
#9DC8DD
oklch(80.9% 0.054 229.3)
-
Step 400
400
#63ABCC
oklch(70.7% 0.087 229.4)
-
Step 500
500 (this color)
#339BC4
oklch(64.8% 0.11 228.8)
-
Step 600
600
#007EA6
oklch(55.5% 0.11 229.3)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#044860
oklch(37.6% 0.073 229.4)
-
Step 950
950
#082A38
oklch(26.8% 0.046 229.7)
#339BC4 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) | #8699C6 | 0.079 |
| Deuteranopia (no green cones) | #728AC3 | 0.068 |
| Tritanopia (no blue cones) | #00A7A9 | 0.064 |
| Achromatopsia (no color) | #919191 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #339BC4
#339BC4
oklch(64.8% 0.11 228.8)
- #C5794F
#C5794F
oklch(64.9% 0.111 48.9)
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 #339BC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.053
- Blue NCS #118AB2 ΔE 0.056
- Dusty Blue #5A86AD ΔE 0.062
- Cool Blue #4984B8 ΔE 0.063
- Turquoise Blue #06B1C4 ΔE 0.063
- Cadet Blue #5F9EA0 ΔE 0.064
- Water Blue #0E87CC ΔE 0.066
- Off Blue #5684AE ΔE 0.066
Use #339BC4 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.