#4F9FBF
Closest named color: Greyblue (#77A1B5). oklch(66.5% 0.091 226.8), rgb(79, 159, 191).
Aa
Black text reads best on this color (7.04:1).
About this color
#4F9FBF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.091 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.043 away. Black text reads best on it, at 7.04:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.04:1 |
| White text | 2.98:1 |
Values
| HEX | #4F9FBF |
| RGB | rgb(79, 159, 191) |
| HSL | hsl(197, 47%, 53%) |
| OKLCH | oklch(66.5% 0.091 226.8) |
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 #4F9FBF | 2.98:1 | Fails | Lc -61.6 | Content text, not long reading |
| Black text on #4F9FBF | 7.04:1 | AAA | Lc 47.8 | Large or bold text, headings |
| #4F9FBF text on white | 2.98:1 | Fails | Lc 56.2 | Large or bold text, headings |
| #4F9FBF text on black | 7.04:1 | AAA | Lc -45.5 | Large or bold text, headings |
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
#C9DDE6
oklch(88.5% 0.025 226.5)
-
Step 300
300
#A3C7D7
oklch(80.9% 0.045 226.7)
-
Step 400
400
#6FAAC3
oklch(70.7% 0.071 226.6)
-
Step 500
500 (this color)
#4F9FBF
oklch(66.5% 0.091 226.8)
-
Step 600
600
#1C7EA0
oklch(55.5% 0.099 227.1)
-
Step 700
700
#086A89
oklch(49% 0.093 227.3)
-
Step 800
800
#10576F
oklch(42.7% 0.076 226.5)
-
Step 900
900
#17485A
oklch(37.8% 0.06 226.2)
-
Step 950
950
#102A35
oklch(27% 0.038 228.2)
#4F9FBF 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) | #8E9CC1 | 0.069 |
| Deuteranopia (no green cones) | #7E90BF | 0.061 |
| Tritanopia (no blue cones) | #00A8A9 | 0.059 |
| Achromatopsia (no color) | #959595 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F9FBF
#4F9FBF
oklch(66.5% 0.091 226.8)
- #C28263
#C28263
oklch(66.5% 0.091 46.6)
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 #4F9FBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.043
- Cadet Blue #5F9EA0 ΔE 0.047
- Turquoise Blue #06B1C4 ΔE 0.053
- Faded Blue #658CBB ΔE 0.054
- Silver Lake Blue #778DA9 ΔE 0.060
- Bluegrey #85A3B2 ΔE 0.061
- Blue Grey #758DA3 ΔE 0.062
- Bluey Grey #89A0B0 ΔE 0.064
Use #4F9FBF 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.