#4F879F
Closest named color: Dusty Blue (#5A86AD). oklch(59.4% 0.069 227.5), rgb(79, 135, 159).
Aa
Black text reads best on this color (5.29:1).
About this color
#4F879F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 59%, its chroma 0.069 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.027 away. Black text reads best on it, at 5.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.29:1 |
| White text | 3.96:1 |
Values
| HEX | #4F879F |
| RGB | rgb(79, 135, 159) |
| HSL | hsl(198, 34%, 47%) |
| OKLCH | oklch(59.4% 0.069 227.5) |
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 #4F879F | 3.96:1 | AA large text | Lc -72.4 | Content text, not long reading |
| Black text on #4F879F | 5.29:1 | AA | Lc 37.2 | Non-text elements, placeholder text |
| #4F879F text on white | 3.96:1 | AA large text | Lc 66.9 | Content text, not long reading |
| #4F879F text on black | 5.29:1 | AA | Lc -34.8 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CDDCE3
oklch(88.5% 0.019 227.3)
-
Step 300
300
#ABC6D2
oklch(81% 0.034 226.4)
-
Step 400
400
#7DA8BB
oklch(70.7% 0.054 227)
-
Step 500
500 (this color)
#4F879F
oklch(59.4% 0.069 227.5)
-
Step 600
600
#3E7C96
oklch(55.6% 0.075 227.8)
-
Step 700
700
#2F6980
oklch(49.2% 0.07 226.9)
-
Step 800
800
#285568
oklch(42.6% 0.059 228.1)
-
Step 900
900
#264654
oklch(37.6% 0.045 228.1)
-
Step 950
950
#172931
oklch(26.9% 0.028 227.9)
#4F879F 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) | #7A85A0 | 0.051 |
| Deuteranopia (no green cones) | #6F7C9F | 0.046 |
| Tritanopia (no blue cones) | #248E8F | 0.049 |
| Achromatopsia (no color) | #808080 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F879F
#4F879F
oklch(59.4% 0.069 227.5)
- #A1725A
#A1725A
oklch(59.4% 0.069 48)
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 #4F879F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.027
- Off Blue #5684AE ΔE 0.029
- Stormy Blue #507B9C ΔE 0.035
- Grey Blue #647D8E ΔE 0.037
- Cerulean #457B9D ΔE 0.038
- Steel Blue #4682B4 ΔE 0.040
- Teal Blue #01889F ΔE 0.041
- Slate Gray #708090 ΔE 0.042
Use #4F879F 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.