#0978E6
Closest named color: Cerulean Blue (#056EEE). oklch(58.1% 0.188 255.1), rgb(9, 120, 230).
Aa
Black text reads best on this color (4.84:1).
About this color
#0978E6 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.188 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.029 away. Black text reads best on it, at 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.188) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.84:1 |
| White text | 4.33:1 |
Values
| HEX | #0978E6 |
| RGB | rgb(9, 120, 230) |
| HSL | hsl(210, 92%, 47%) |
| OKLCH | oklch(58.1% 0.188 255.1) |
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 #0978E6 | 4.33:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #0978E6 | 4.84:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #0978E6 text on white | 4.33:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #0978E6 text on black | 4.84:1 | AA | Lc -32.4 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9CC4F7
oklch(81% 0.084 254.7)
-
Step 400
400
#63A3F3
oklch(70.7% 0.135 254.8)
-
Step 500
500
#3389EF
oklch(63.1% 0.173 255.1)
-
Step 600
600 (this color)
#0978E6
oklch(58.1% 0.188 255.1)
-
Step 700
700
#005EB9
oklch(49% 0.162 255.1)
-
Step 800
800
#004D99
oklch(42.7% 0.14 255)
-
Step 900
900
#0C417C
oklch(37.8% 0.113 255)
-
Step 950
950
#0A2648
oklch(26.9% 0.072 255.3)
#0978E6 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) | #3583EA | 0.038 |
| Deuteranopia (no green cones) | #0071E4 | 0.019 |
| Tritanopia (no blue cones) | #0093A4 | 0.140 |
| Achromatopsia (no color) | #797979 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0978E6
#0978E6
oklch(58.1% 0.188 255.1)
- #A46E00
#A46E00
oklch(58% 0.122 75)
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 #0978E6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.029
- Clear Blue #247AFD ΔE 0.037
- Royal Blue #4169E1 ΔE 0.043
- Bright Blue #0165FC ΔE 0.059
- Neon Blue #4361EE ΔE 0.061
- Water Blue #0E87CC ΔE 0.062
- Windows Blue #3778BF ΔE 0.062
- Azul #1D5DEC ΔE 0.066
Use #0978E6 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.