#839FCC
Closest named color: Greyblue (#77A1B5). oklch(69.8% 0.074 259.8), rgb(131, 159, 204).
Aa
Black text reads best on this color (7.79:1).
About this color
#839FCC is a medium-light, moderately saturated blue. In OKLCH its lightness is 70%, its chroma 0.074 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.041 away. Black text reads best on it, at 7.79:1.
| Hue family | Blues |
| Lightness | medium-light (70%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.79:1 |
| White text | 2.69:1 |
Values
| HEX | #839FCC |
| RGB | rgb(131, 159, 204) |
| HSL | hsl(217, 42%, 66%) |
| OKLCH | oklch(69.8% 0.074 259.8) |
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 #839FCC | 2.69:1 | Fails | Lc -57.5 | Large or bold text, headings |
| Black text on #839FCC | 7.79:1 | AAA | Lc 51.8 | Large or bold text, headings |
| #839FCC text on white | 2.69:1 | Fails | Lc 52.2 | Large or bold text, headings |
| #839FCC text on black | 7.79:1 | AAA | Lc -49.6 | 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 400.
-
Step 50
50
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#CFDAEA
oklch(88.5% 0.025 257.6)
-
Step 300
300
#AFC2DF
oklch(80.9% 0.046 258.8)
-
Step 400
400 (this color)
#839FCC
oklch(69.8% 0.074 259.8)
-
Step 500
500
#678AC2
oklch(63% 0.094 259.5)
-
Step 600
600
#4F73AF
oklch(55.6% 0.103 260.2)
-
Step 700
700
#3F6096
oklch(48.9% 0.095 259.8)
-
Step 800
800
#354F7A
oklch(42.7% 0.079 260)
-
Step 900
900
#2E4262
oklch(37.8% 0.061 259.5)
-
Step 950
950
#1B2739
oklch(27.1% 0.038 258.3)
#839FCC 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) | #8FA1CE | 0.017 |
| Deuteranopia (no green cones) | #879ACB | 0.014 |
| Tritanopia (no blue cones) | #6CA8AE | 0.065 |
| Achromatopsia (no color) | #9E9E9E | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #839FCC
#839FCC
oklch(69.8% 0.074 259.8)
- #B69969
#B69969
oklch(69.8% 0.073 79.7)
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 #839FCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.041
- Bluey Grey #89A0B0 ΔE 0.043
- Cool Gray #8D99AE ΔE 0.043
- Bluegrey #85A3B2 ΔE 0.044
- Cool Steel #97A7B3 ΔE 0.055
- Cool Grey #95A3A6 ΔE 0.064
- Silver Lake Blue #778DA9 ΔE 0.067
- Faded Blue #658CBB ΔE 0.069
Use #839FCC 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.