#439EB7
Closest named color: Cadet Blue (#5F9EA0). oklch(65.5% 0.093 218.9), rgb(67, 158, 183).
Aa
Black text reads best on this color (6.81:1).
About this color
#439EB7 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.093 and its hue 219°. 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 6.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.81:1 |
| White text | 3.08:1 |
Values
| HEX | #439EB7 |
| RGB | rgb(67, 158, 183) |
| HSL | hsl(193, 46%, 49%) |
| OKLCH | oklch(65.5% 0.093 218.9) |
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 #439EB7 | 3.08:1 | AA large text | Lc -62.9 | Content text, not long reading |
| Black text on #439EB7 | 6.81:1 | AA | Lc 46.6 | Large or bold text, headings |
| #439EB7 text on white | 3.08:1 | AA large text | Lc 57.5 | Large or bold text, headings |
| #439EB7 text on black | 6.81:1 | AA | Lc -44.3 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DEE4
oklch(88.6% 0.025 215.9)
-
Step 300
300
#A1C8D5
oklch(80.9% 0.045 220.1)
-
Step 400
400
#6AACBF
oklch(70.7% 0.073 218.2)
-
Step 500
500 (this color)
#439EB7
oklch(65.5% 0.093 218.9)
-
Step 600
600
#00819B
oklch(55.7% 0.1 218.5)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800
#00586B
oklch(42.5% 0.077 219.1)
-
Step 900
900
#114957
oklch(37.7% 0.06 218.5)
-
Step 950
950
#0D2B33
oklch(27.1% 0.038 218.3)
#439EB7 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) | #8E9AB8 | 0.079 |
| Deuteranopia (no green cones) | #7E8DB7 | 0.072 |
| Tritanopia (no blue cones) | #00A6A6 | 0.047 |
| Achromatopsia (no color) | #939393 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #439EB7
#439EB7
oklch(65.5% 0.093 218.9)
- #C27C66
#C27C66
oklch(65.4% 0.094 38.2)
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 #439EB7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.040
- Greyblue #77A1B5 ΔE 0.051
- Turquoise Blue #06B1C4 ΔE 0.053
- Sea #3C9992 ΔE 0.056
- Faded Blue #658CBB ΔE 0.059
- Dull Teal #5F9E8F ΔE 0.062
- Blue Grey #758DA3 ΔE 0.062
- Silver Lake Blue #778DA9 ΔE 0.063
Use #439EB7 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.