#3F8EAE
Closest named color: Blue NCS (#118AB2). oklch(61.1% 0.091 227.7), rgb(63, 142, 174).
Aa
Black text reads best on this color (5.69:1).
About this color
#3F8EAE is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.091 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.028 away. Black text reads best on it, at 5.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.69:1 |
| White text | 3.68:1 |
Values
| HEX | #3F8EAE |
| RGB | rgb(63, 142, 174) |
| HSL | hsl(197, 47%, 46%) |
| OKLCH | oklch(61.1% 0.091 227.7) |
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 #3F8EAE | 3.68:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #3F8EAE | 5.69:1 | AA | Lc 39.8 | Non-text elements, placeholder text |
| #3F8EAE text on white | 3.68:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #3F8EAE text on black | 5.69:1 | AA | Lc -37.4 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE6
oklch(88.5% 0.025 226.5)
-
Step 300
300
#A4C7D7
oklch(80.9% 0.044 227.3)
-
Step 400
400
#70AAC3
oklch(70.7% 0.071 227)
-
Step 500
500 (this color)
#3F8EAE
oklch(61.1% 0.091 227.7)
-
Step 600
600
#1F7EA0
oklch(55.6% 0.098 227.5)
-
Step 700
700
#0E6A89
oklch(49% 0.091 227.8)
-
Step 800
800
#12576F
oklch(42.8% 0.075 226.9)
-
Step 900
900
#19485A
oklch(37.8% 0.059 226.9)
-
Step 950
950
#102A35
oklch(27% 0.038 228.2)
#3F8EAE 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) | #7D8CB0 | 0.066 |
| Deuteranopia (no green cones) | #6E80AE | 0.059 |
| Tritanopia (no blue cones) | #009798 | 0.056 |
| Achromatopsia (no color) | #858585 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F8EAE
#3F8EAE
oklch(61.1% 0.091 227.7)
- #B07252
#B07252
oklch(61% 0.091 47.8)
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 #3F8EAE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.028
- Dusty Blue #5A86AD ΔE 0.031
- Off Blue #5684AE ΔE 0.033
- Cool Blue #4984B8 ΔE 0.037
- Steel Blue #4682B4 ΔE 0.038
- Teal Blue #01889F ΔE 0.041
- Faded Blue #658CBB ΔE 0.044
- Teal Green #0A9396 ΔE 0.052
Use #3F8EAE 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.