#5B79AB
Closest named color: Stormy Blue (#507B9C). oklch(57.4% 0.085 260.3), rgb(91, 121, 171).
Aa
Black text reads best on this color (4.76:1).
About this color
#5B79AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.085 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.030 away. Black text reads best on it, at 4.76:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.76:1 |
| White text | 4.40:1 |
Values
| HEX | #5B79AB |
| RGB | rgb(91, 121, 171) |
| HSL | hsl(218, 32%, 51%) |
| OKLCH | oklch(57.4% 0.085 260.3) |
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 #5B79AB | 4.40:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #5B79AB | 4.76:1 | AA | Lc 33.6 | Non-text elements, placeholder text |
| #5B79AB text on white | 4.40:1 | AA large text | Lc 70.5 | Content text, not long reading |
| #5B79AB text on black | 4.76:1 | AA | Lc -31.2 | 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 600.
-
Step 50
50
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D1DAE8
oklch(88.6% 0.022 259.2)
-
Step 300
300
#B3C2DA
oklch(81% 0.038 259.8)
-
Step 400
400
#8BA2C7
oklch(70.8% 0.06 259.8)
-
Step 500
500
#6E8AB9
oklch(63% 0.078 260.6)
-
Step 600
600 (this color)
#5B79AB
oklch(57.4% 0.085 260.3)
-
Step 700
700
#46618E
oklch(49.1% 0.08 260.3)
-
Step 800
800
#3A4F73
oklch(42.7% 0.066 260.8)
-
Step 900
900
#32425D
oklch(37.8% 0.051 260.6)
-
Step 950
950
#1D2736
oklch(27% 0.031 258.3)
#5B79AB 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) | #667CAD | 0.017 |
| Deuteranopia (no green cones) | #5D75AA | 0.011 |
| Tritanopia (no blue cones) | #3B848B | 0.076 |
| Achromatopsia (no color) | #787878 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B79AB
#5B79AB
oklch(57.4% 0.085 260.3)
- #93733A
#93733A
oklch(57.5% 0.085 80.2)
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 #5B79AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.030
- Off Blue #5684AE ΔE 0.030
- Steel Blue #4682B4 ΔE 0.031
- Dull Blue #49759C ΔE 0.034
- Cool Blue #4984B8 ΔE 0.035
- Cerulean #457B9D ΔE 0.035
- Dusty Blue #5A86AD ΔE 0.037
- Flat Blue #3C73A8 ΔE 0.040
Use #5B79AB 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.