#507C99
Closest named color: Stormy Blue (#507B9C). oklch(56.6% 0.066 238.4), rgb(80, 124, 153).
Aa
Black text reads best on this color (4.68:1).
About this color
#507C99 is a medium-dark, muted blue. In OKLCH its lightness is 57%, its chroma 0.066 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Stormy Blue (#507B9C), ΔE 0.006 away. Black text reads best on it, at 4.68:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Stormy Blue (#507B9C) |
| Black text | 4.68:1 |
| White text | 4.48:1 |
Values
| HEX | #507C99 |
| RGB | rgb(80, 124, 153) |
| HSL | hsl(204, 31%, 46%) |
| OKLCH | oklch(56.6% 0.066 238.4) |
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 #507C99 | 4.48:1 | AA large text | Lc -76.5 | Fine for body text |
| Black text on #507C99 | 4.68:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #507C99 text on white | 4.48:1 | AA large text | Lc 71.0 | Content text, not long reading |
| #507C99 text on black | 4.68:1 | AA | Lc -30.6 | 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
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE3
oklch(88.5% 0.016 239.1)
-
Step 300
300
#B0C4D2
oklch(81% 0.029 238.3)
-
Step 400
400
#86A5BB
oklch(70.6% 0.047 239.2)
-
Step 500
500
#678FAA
oklch(63.1% 0.06 238.5)
-
Step 600
600 (this color)
#507C99
oklch(56.6% 0.066 238.4)
-
Step 700
700
#3E6680
oklch(49.2% 0.062 238.3)
-
Step 800
800
#335368
oklch(42.7% 0.051 238.4)
-
Step 900
900
#2D4554
oklch(37.7% 0.039 236.7)
-
Step 950
950
#1B2831
oklch(26.9% 0.025 239.1)
#507C99 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) | #6F7B9A | 0.039 |
| Deuteranopia (no green cones) | #657499 | 0.032 |
| Tritanopia (no blue cones) | #2F8386 | 0.051 |
| Achromatopsia (no color) | #777777 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #507C99
#507C99
oklch(56.6% 0.066 238.4)
- #946D4F
#946D4F
oklch(56.7% 0.066 58.5)
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 #507C99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Stormy Blue #507B9C ΔE 0.006
- Cerulean #457B9D ΔE 0.013
- Dull Blue #49759C ΔE 0.025
- Metallic Blue #4F738E ΔE 0.028
- Grey Blue #647D8E ΔE 0.029
- Off Blue #5684AE ΔE 0.037
- Dusty Blue #5A86AD ΔE 0.041
- Steel Blue #4682B4 ΔE 0.041
Use #507C99 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.