#439BB7
Closest named color: Cadet Blue (#5F9EA0). oklch(64.7% 0.093 222.1), rgb(67, 155, 183).
Aa
Black text reads best on this color (6.61:1).
About this color
#439BB7 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.093 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.044 away. Black text reads best on it, at 6.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.61:1 |
| White text | 3.17:1 |
Values
| HEX | #439BB7 |
| RGB | rgb(67, 155, 183) |
| HSL | hsl(194, 46%, 49%) |
| OKLCH | oklch(64.7% 0.093 222.1) |
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 #439BB7 | 3.17:1 | AA large text | Lc -64.1 | Content text, not long reading |
| Black text on #439BB7 | 6.61:1 | AA | Lc 45.4 | Large or bold text, headings |
| #439BB7 text on white | 3.17:1 | AA large text | Lc 58.7 | Large or bold text, headings |
| #439BB7 text on black | 6.61:1 | AA | Lc -43.1 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE5
oklch(88.4% 0.025 222.6)
-
Step 300
300
#A1C8D6
oklch(80.9% 0.046 221.7)
-
Step 400
400
#6BABC1
oklch(70.6% 0.073 221.9)
-
Step 500
500 (this color)
#439BB7
oklch(64.7% 0.093 222.1)
-
Step 600
600
#09809E
oklch(55.7% 0.101 222.3)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#03586D
oklch(42.7% 0.078 221.6)
-
Step 900
900
#134959
oklch(37.9% 0.061 221.9)
-
Step 950
950
#0E2B34
oklch(27.2% 0.038 221.3)
#439BB7 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) | #8B97B8 | 0.076 |
| Deuteranopia (no green cones) | #7A8BB7 | 0.067 |
| Tritanopia (no blue cones) | #00A4A4 | 0.051 |
| Achromatopsia (no color) | #909090 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439BB7
#439BB7
oklch(64.7% 0.093 222.1)
- #BF7B61
#BF7B61
oklch(64.8% 0.093 41.7)
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 #439BB7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.044
- Faded Blue #658CBB ΔE 0.052
- Greyblue #77A1B5 ΔE 0.055
- Sea #3C9992 ΔE 0.057
- Blue Grey #758DA3 ΔE 0.058
- Dusty Blue #5A86AD ΔE 0.058
- Silver Lake Blue #778DA9 ΔE 0.059
- Blue NCS #118AB2 ΔE 0.059
Use #439BB7 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.