#217099
Closest named color: Ocean Blue (#03719C). oklch(51.8% 0.098 236.3), rgb(33, 112, 153).
Aa
White text reads best on this color (5.46:1).
About this color
#217099 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.098 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.010 away. White text reads best on it, at 5.46:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.84:1 |
| White text | 5.46:1 |
Values
| HEX | #217099 |
| RGB | rgb(33, 112, 153) |
| HSL | hsl(201, 65%, 36%) |
| OKLCH | oklch(51.8% 0.098 236.3) |
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 #217099 | 5.46:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #217099 | 3.84:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #217099 text on white | 5.46:1 | AA | Lc 76.9 | Fine for body text |
| #217099 text on black | 3.84:1 | AA large text | Lc -24.8 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#C9DCE9
oklch(88.4% 0.027 237.6)
-
Step 300
300
#A4C6DC
oklch(80.9% 0.048 236.6)
-
Step 400
400
#71A8CA
oklch(70.6% 0.076 236.5)
-
Step 500
500
#4992BC
oklch(63.1% 0.096 236.3)
-
Step 600
600
#257CA9
oklch(55.7% 0.106 236.3)
-
Step 700
700 (this color)
#217099
oklch(51.8% 0.098 236.3)
-
Step 800
800
#175575
oklch(42.7% 0.081 236.2)
-
Step 900
900
#1B465F
oklch(37.6% 0.064 237.4)
-
Step 950
950
#112937
oklch(26.9% 0.04 236.4)
#217099 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) | #5C709B | 0.057 |
| Deuteranopia (no green cones) | #4C6498 | 0.048 |
| Tritanopia (no blue cones) | #007B7E | 0.064 |
| Achromatopsia (no color) | #696969 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #217099
#217099
oklch(51.8% 0.098 236.3)
- #92582A
#92582A
oklch(51.7% 0.098 56.6)
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 #217099, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.010
- Sea Blue #047495 ΔE 0.017
- Muted Blue #3B719F ΔE 0.023
- Peacock Blue #016795 ΔE 0.032
- Flat Blue #3C73A8 ΔE 0.034
- Ocean #017B92 ΔE 0.038
- Dull Blue #49759C ΔE 0.039
- Denim #3B638C ΔE 0.040
Use #217099 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.