#439CBD
Closest named color: Cadet Blue (#5F9EA0). oklch(65.2% 0.097 225.7), rgb(67, 156, 189).
Aa
Black text reads best on this color (6.72:1).
About this color
#439CBD is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.097 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.050 away. Black text reads best on it, at 6.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.72:1 |
| White text | 3.12:1 |
Values
| HEX | #439CBD |
| RGB | rgb(67, 156, 189) |
| HSL | hsl(196, 48%, 50%) |
| OKLCH | oklch(65.2% 0.097 225.7) |
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 #439CBD | 3.12:1 | AA large text | Lc -63.4 | Content text, not long reading |
| Black text on #439CBD | 6.72:1 | AA | Lc 46.1 | Large or bold text, headings |
| #439CBD text on white | 3.12:1 | AA large text | Lc 58.0 | Large or bold text, headings |
| #439CBD text on black | 6.72:1 | AA | Lc -43.8 | 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
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A1C8D8
oklch(81% 0.047 224.8)
-
Step 400
400
#6AABC5
oklch(70.7% 0.076 225.5)
-
Step 500
500 (this color)
#439CBD
oklch(65.2% 0.097 225.7)
-
Step 600
600
#027FA2
oklch(55.6% 0.106 225.8)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900
#11485B
oklch(37.6% 0.064 225.9)
-
Step 950
950
#0D2A35
oklch(26.9% 0.04 226.2)
#439CBD 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) | #8A99BF | 0.074 |
| Deuteranopia (no green cones) | #798CBD | 0.066 |
| Tritanopia (no blue cones) | #00A6A7 | 0.057 |
| Achromatopsia (no color) | #929292 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439CBD
#439CBD
oklch(65.2% 0.097 225.7)
- #C17D5C
#C17D5C
oklch(65.3% 0.097 46.4)
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 #439CBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.050
- Faded Blue #658CBB ΔE 0.051
- Greyblue #77A1B5 ΔE 0.054
- Turquoise Blue #06B1C4 ΔE 0.059
- Dusty Blue #5A86AD ΔE 0.061
- Silver Lake Blue #778DA9 ΔE 0.061
- Blue Grey #758DA3 ΔE 0.062
- Blue NCS #118AB2 ΔE 0.062
Use #439CBD 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.