#3E9FBE
Closest named color: Cadet Blue (#5F9EA0). oklch(65.8% 0.1 222.7), rgb(62, 159, 190).
Aa
Black text reads best on this color (6.90:1).
About this color
#3E9FBE is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.100 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.049 away. Black text reads best on it, at 6.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.90:1 |
| White text | 3.04:1 |
Values
| HEX | #3E9FBE |
| RGB | rgb(62, 159, 190) |
| HSL | hsl(195, 51%, 49%) |
| OKLCH | oklch(65.8% 0.1 222.7) |
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 #3E9FBE | 3.04:1 | AA large text | Lc -62.3 | Content text, not long reading |
| Black text on #3E9FBE | 6.90:1 | AA | Lc 47.1 | Large or bold text, headings |
| #3E9FBE text on white | 3.04:1 | AA large text | Lc 56.9 | Large or bold text, headings |
| #3E9FBE text on black | 6.90:1 | AA | Lc -44.8 | 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
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C7DEE6
oklch(88.6% 0.027 220.7)
-
Step 300
300
#9FC8D8
oklch(80.9% 0.049 223.7)
-
Step 400
400
#67ACC4
oklch(70.8% 0.078 222.4)
-
Step 500
500 (this color)
#3E9FBE
oklch(65.8% 0.1 222.7)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#0B495B
oklch(37.8% 0.066 223)
-
Step 950
950
#0B2B35
oklch(27.1% 0.041 222.2)
#3E9FBE 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) | #8D9BC0 | 0.080 |
| Deuteranopia (no green cones) | #7B8EBE | 0.071 |
| Tritanopia (no blue cones) | #00A9A9 | 0.054 |
| Achromatopsia (no color) | #949494 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E9FBE
#3E9FBE
oklch(65.8% 0.1 222.7)
- #C57D5F
#C57D5F
oklch(65.9% 0.1 43.3)
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 #3E9FBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.049
- Turquoise Blue #06B1C4 ΔE 0.050
- Greyblue #77A1B5 ΔE 0.054
- Faded Blue #658CBB ΔE 0.059
- Sea #3C9992 ΔE 0.065
- Silver Lake Blue #778DA9 ΔE 0.067
- Blue Grey #758DA3 ΔE 0.068
- Blue NCS #118AB2 ΔE 0.068
Use #3E9FBE 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.