#507A9C
Closest named color: Stormy Blue (#507B9C). oklch(56.3% 0.071 243.9), rgb(80, 122, 156).
Aa
Black text reads best on this color (4.60:1).
About this color
#507A9C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.071 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.003 away. Black text reads best on it, at 4.60:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.60:1 |
| White text | 4.56:1 |
Values
| HEX | #507A9C |
| RGB | rgb(80, 122, 156) |
| HSL | hsl(207, 32%, 46%) |
| OKLCH | oklch(56.3% 0.071 243.9) |
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 #507A9C | 4.56:1 | AA | Lc -77.0 | Fine for body text |
| Black text on #507A9C | 4.60:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #507A9C text on white | 4.56:1 | AA | Lc 71.6 | Content text, not long reading |
| #507A9C text on black | 4.60:1 | AA | Lc -30.1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#D0DBE4
oklch(88.6% 0.017 242.5)
-
Step 300
300
#B0C3D4
oklch(80.8% 0.032 245.2)
-
Step 400
400
#86A5BF
oklch(70.8% 0.051 243.9)
-
Step 500
500
#678EAE
oklch(63% 0.065 243.8)
-
Step 600
600 (this color)
#507A9C
oklch(56.3% 0.071 243.9)
-
Step 700
700
#3F6583
oklch(49.1% 0.065 243.5)
-
Step 800
800
#34526B
oklch(42.6% 0.055 244.7)
-
Step 900
900
#2E4457
oklch(37.7% 0.043 245.3)
-
Step 950
950
#1B2833
oklch(27% 0.027 244.6)
#507A9C 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) | #6C7A9E | 0.035 |
| Deuteranopia (no green cones) | #62729B | 0.030 |
| Tritanopia (no blue cones) | #2D8285 | 0.059 |
| Achromatopsia (no color) | #767676 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #507A9C
#507A9C
oklch(56.3% 0.071 243.9)
- #936C48
#936C48
oklch(56.2% 0.071 63.3)
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 #507A9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.003
- Cerulean #457B9D ΔE 0.011
- Dull Blue #49759C ΔE 0.018
- Metallic Blue #4F738E ΔE 0.026
- Grey Blue #647D8E ΔE 0.035
- Off Blue #5684AE ΔE 0.037
- Muted Blue #3B719F ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.038
Use #507A9C 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.